Finding the Fourth Proportional to 9,516,413.78, 13,132,661.18 and 5,165,499.39

Step by Step Solution

1. Step 1: Write the proportion equation
   9,516,413.78 : 13,132,661.18 = 5,165,499.39 : x
2. Step 2: Convert to fraction form
   9,516,413.78/13,132,661.18 = 5,165,499.39/x
3. Step 3: Cross multiply
   9,516,413.78x = 13,132,661.18 × 5,165,499.39
4. Step 4: Simplify right side
   9,516,413.78x = 67,836,753,314,366.67
5. Step 5: Solve for x
   x = 67,836,753,314,366.67/9,516,413.78
6. Step 6: Final answer
   x = 7,128,394.67