Finding the Fourth Proportional to 9,111.75, 12,572.05 and 5,132.07

Step by Step Solution

1. Step 1: Write the proportion equation
   9,111.75 : 12,572.05 = 5,132.07 : x
2. Step 2: Convert to fraction form
   9,111.75/12,572.05 = 5,132.07/x
3. Step 3: Cross multiply
   9,111.75x = 12,572.05 × 5,132.07
4. Step 4: Simplify right side
   9,111.75x = 64,520,640.64
5. Step 5: Solve for x
   x = 64,520,640.64/9,111.75
6. Step 6: Final answer
   x = 7,081.04