Finding the Fourth Proportional to 11,310.17, 15,601.61 and 7,111.13

Step by Step Solution

1. Step 1: Write the proportion equation
   11,310.17 : 15,601.61 = 7,111.13 : x
2. Step 2: Convert to fraction form
   11,310.17/15,601.61 = 7,111.13/x
3. Step 3: Cross multiply
   11,310.17x = 15,601.61 × 7,111.13
4. Step 4: Simplify right side
   11,310.17x = 110,945,016.69
5. Step 5: Solve for x
   x = 110,945,016.69/11,310.17
6. Step 6: Final answer
   x = 9,809.32