Finding the Fourth Proportional to 9,867,003.20, 14,793,769.42 and 5,256,678.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,867,003.20 : 14,793,769.42 = 5,256,678.78 : x
2. Step 2: Convert to fraction form
   9,867,003.20/14,793,769.42 = 5,256,678.78/x
3. Step 3: Cross multiply
   9,867,003.20x = 14,793,769.42 × 5,256,678.78
4. Step 4: Simplify right side
   9,867,003.20x = 77,766,093,786,326.91
5. Step 5: Solve for x
   x = 77,766,093,786,326.91/9,867,003.20
6. Step 6: Final answer
   x = 7,881,429.87