Finding the Fourth Proportional to 8,428,870.10, 12,643,658.78 and 2,671,477.76

Step by Step Solution

1. Step 1: Write the proportion equation
   8,428,870.10 : 12,643,658.78 = 2,671,477.76 : x
2. Step 2: Convert to fraction form
   8,428,870.10/12,643,658.78 = 2,671,477.76/x
3. Step 3: Cross multiply
   8,428,870.10x = 12,643,658.78 × 2,671,477.76
4. Step 4: Simplify right side
   8,428,870.10x = 33,777,253,159,223.05
5. Step 5: Solve for x
   x = 33,777,253,159,223.05/8,428,870.10
6. Step 6: Final answer
   x = 4,007,328.71