Finding the Fourth Proportional to 10,111.28, 15,144.35 and 7,753.93

Step by Step Solution

1. Step 1: Write the proportion equation
   10,111.28 : 15,144.35 = 7,753.93 : x
2. Step 2: Convert to fraction form
   10,111.28/15,144.35 = 7,753.93/x
3. Step 3: Cross multiply
   10,111.28x = 15,144.35 × 7,753.93
4. Step 4: Simplify right side
   10,111.28x = 117,428,229.80
5. Step 5: Solve for x
   x = 117,428,229.80/10,111.28
6. Step 6: Final answer
   x = 11,613.59