Finding the Fourth Proportional to 9,138,404,386.76, 12,609,109,594.55 and 5,275,873,057.59

Step by Step Solution

1. Step 1: Write the proportion equation
   9,138,404,386.76 : 12,609,109,594.55 = 5,275,873,057.59 : x
2. Step 2: Convert to fraction form
   9,138,404,386.76/12,609,109,594.55 = 5,275,873,057.59/x
3. Step 3: Cross multiply
   9,138,404,386.76x = 12,609,109,594.55 × 5,275,873,057.59
4. Step 4: Simplify right side
   9,138,404,386.76x = 66,524,061,590,059,540,480
5. Step 5: Solve for x
   x = 66,524,061,590,059,540,480/9,138,404,386.76
6. Step 6: Final answer
   x = 7,279,614,555.74