Finding the Fourth Proportional to 8,417,425.47, 12,620,078.42 and 5,172,258.15

Step by Step Solution

1. Step 1: Write the proportion equation
   8,417,425.47 : 12,620,078.42 = 5,172,258.15 : x
2. Step 2: Convert to fraction form
   8,417,425.47/12,620,078.42 = 5,172,258.15/x
3. Step 3: Cross multiply
   8,417,425.47x = 12,620,078.42 × 5,172,258.15
4. Step 4: Simplify right side
   8,417,425.47x = 65,274,303,435,622.84
5. Step 5: Solve for x
   x = 65,274,303,435,622.84/8,417,425.47
6. Step 6: Final answer
   x = 7,754,663.66