Finding the Fourth Proportional to 9,111.25, 12,574.54 and 5,753.90

Step by Step Solution

1. Step 1: Write the proportion equation
   9,111.25 : 12,574.54 = 5,753.90 : x
2. Step 2: Convert to fraction form
   9,111.25/12,574.54 = 5,753.90/x
3. Step 3: Cross multiply
   9,111.25x = 12,574.54 × 5,753.90
4. Step 4: Simplify right side
   9,111.25x = 72,352,684.33
5. Step 5: Solve for x
   x = 72,352,684.33/9,111.25
6. Step 6: Final answer
   x = 7,941.03