Finding the Fourth Proportional to 11,116.89, 15,315.33 and 7,753.70

Step by Step Solution

1. Step 1: Write the proportion equation
   11,116.89 : 15,315.33 = 7,753.70 : x
2. Step 2: Convert to fraction form
   11,116.89/15,315.33 = 7,753.70/x
3. Step 3: Cross multiply
   11,116.89x = 15,315.33 × 7,753.70
4. Step 4: Simplify right side
   11,116.89x = 118,750,541.59
5. Step 5: Solve for x
   x = 118,750,541.59/11,116.89
6. Step 6: Final answer
   x = 10,681.99