Finding the Fourth Proportional to 9,124.74, 12,592.08 and 5,145.89

Step by Step Solution

1. Step 1: Write the proportion equation
   9,124.74 : 12,592.08 = 5,145.89 : x
2. Step 2: Convert to fraction form
   9,124.74/12,592.08 = 5,145.89/x
3. Step 3: Cross multiply
   9,124.74x = 12,592.08 × 5,145.89
4. Step 4: Simplify right side
   9,124.74x = 64,797,395.59
5. Step 5: Solve for x
   x = 64,797,395.59/9,124.74
6. Step 6: Final answer
   x = 7,101.29