Finding the Fourth Proportional to 5,435,978.72, 7,501,655.42 and 2,988,631.40

Step by Step Solution

1. Step 1: Write the proportion equation
   5,435,978.72 : 7,501,655.42 = 2,988,631.40 : x
2. Step 2: Convert to fraction form
   5,435,978.72/7,501,655.42 = 2,988,631.40/x
3. Step 3: Cross multiply
   5,435,978.72x = 7,501,655.42 × 2,988,631.40
4. Step 4: Simplify right side
   5,435,978.72x = 22,419,682,940,192.19
5. Step 5: Solve for x
   x = 22,419,682,940,192.19/5,435,978.72
6. Step 6: Final answer
   x = 4,124,313.96