Finding the Fourth Proportional to 12,020,533.46, 18,032,899.72 and 5,288,772.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,020,533.46 : 18,032,899.72 = 5,288,772.50 : x
2. Step 2: Convert to fraction form
   12,020,533.46/18,032,899.72 = 5,288,772.50/x
3. Step 3: Cross multiply
   12,020,533.46x = 18,032,899.72 × 5,288,772.50
4. Step 4: Simplify right side
   12,020,533.46x = 95,371,904,134,393.69
5. Step 5: Solve for x
   x = 95,371,904,134,393.69/12,020,533.46
6. Step 6: Final answer
   x = 7,934,082.50