Finding the Fourth Proportional to 9,124.75, 12,592.67 and 5,145.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,124.75 : 12,592.67 = 5,145.12 : x
2. Step 2: Convert to fraction form
   9,124.75/12,592.67 = 5,145.12/x
3. Step 3: Cross multiply
   9,124.75x = 12,592.67 × 5,145.12
4. Step 4: Simplify right side
   9,124.75x = 64,790,772.54
5. Step 5: Solve for x
   x = 64,790,772.54/9,124.75
6. Step 6: Final answer
   x = 7,100.55