Finding the Fourth Proportional to 11,658.72, 17,495.34 and 5,085

Step by Step Solution

1. Step 1: Write the proportion equation
   11,658.72 : 17,495.34 = 5,085 : x
2. Step 2: Convert to fraction form
   11,658.72/17,495.34 = 5,085/x
3. Step 3: Cross multiply
   11,658.72x = 17,495.34 × 5,085
4. Step 4: Simplify right side
   11,658.72x = 88,963,803.90
5. Step 5: Solve for x
   x = 88,963,803.90/11,658.72
6. Step 6: Final answer
   x = 7,630.67