Finding the Fourth Proportional to 9,124.04, 12,590.97 and 5,145.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,124.04 : 12,590.97 = 5,145.05 : x
2. Step 2: Convert to fraction form
   9,124.04/12,590.97 = 5,145.05/x
3. Step 3: Cross multiply
   9,124.04x = 12,590.97 × 5,145.05
4. Step 4: Simplify right side
   9,124.04x = 64,781,170.20
5. Step 5: Solve for x
   x = 64,781,170.20/9,124.04
6. Step 6: Final answer
   x = 7,100.05