Finding the Fourth Proportional to 11,407.50, 17,111.29 and 3,509.96

Step by Step Solution

1. Step 1: Write the proportion equation
   11,407.50 : 17,111.29 = 3,509.96 : x
2. Step 2: Convert to fraction form
   11,407.50/17,111.29 = 3,509.96/x
3. Step 3: Cross multiply
   11,407.50x = 17,111.29 × 3,509.96
4. Step 4: Simplify right side
   11,407.50x = 60,059,925.90
5. Step 5: Solve for x
   x = 60,059,925.90/11,407.50
6. Step 6: Final answer
   x = 5,264.95