Finding the Fourth Proportional to 9,138,404,385.26, 12,609,109,592.48 and 5,275,873,056.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,138,404,385.26 : 12,609,109,592.48 = 5,275,873,056.10 : x
2. Step 2: Convert to fraction form
   9,138,404,385.26/12,609,109,592.48 = 5,275,873,056.10/x
3. Step 3: Cross multiply
   9,138,404,385.26x = 12,609,109,592.48 × 5,275,873,056.10
4. Step 4: Simplify right side
   9,138,404,385.26x = 66,524,061,560,339,218,432
5. Step 5: Solve for x
   x = 66,524,061,560,339,218,432/9,138,404,385.26
6. Step 6: Final answer
   x = 7,279,614,553.68