Finding the Fourth Proportional to 10,149.64, 14,006.39 and 5,612.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,149.64 : 14,006.39 = 5,612.31 : x
2. Step 2: Convert to fraction form
   10,149.64/14,006.39 = 5,612.31/x
3. Step 3: Cross multiply
   10,149.64x = 14,006.39 × 5,612.31
4. Step 4: Simplify right side
   10,149.64x = 78,608,174.60
5. Step 5: Solve for x
   x = 78,608,174.60/10,149.64
6. Step 6: Final answer
   x = 7,744.92