Finding the Fourth Proportional to 12,456,468.10, 18,684,702.15 and 7,648,567.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,456,468.10 : 18,684,702.15 = 7,648,567.30 : x
2. Step 2: Convert to fraction form
   12,456,468.10/18,684,702.15 = 7,648,567.30/x
3. Step 3: Cross multiply
   12,456,468.10x = 18,684,702.15 × 7,648,567.30
4. Step 4: Simplify right side
   12,456,468.10x = 142,911,201,874,729.69
5. Step 5: Solve for x
   x = 142,911,201,874,729.69/12,456,468.10
6. Step 6: Final answer
   x = 11,472,850.95