Finding the Fourth Proportional to 11,513.52, 17,186.22 and 9,880.56

Step by Step Solution

1. Step 1: Write the proportion equation
   11,513.52 : 17,186.22 = 9,880.56 : x
2. Step 2: Convert to fraction form
   11,513.52/17,186.22 = 9,880.56/x
3. Step 3: Cross multiply
   11,513.52x = 17,186.22 × 9,880.56
4. Step 4: Simplify right side
   11,513.52x = 169,809,477.88
5. Step 5: Solve for x
   x = 169,809,477.88/11,513.52
6. Step 6: Final answer
   x = 14,748.70