Finding the Fourth Proportional to 17,478.95, 24,121.32 and 9,521.16

Step by Step Solution

1. Step 1: Write the proportion equation
   17,478.95 : 24,121.32 = 9,521.16 : x
2. Step 2: Convert to fraction form
   17,478.95/24,121.32 = 9,521.16/x
3. Step 3: Cross multiply
   17,478.95x = 24,121.32 × 9,521.16
4. Step 4: Simplify right side
   17,478.95x = 229,662,826.52
5. Step 5: Solve for x
   x = 229,662,826.52/17,478.95
6. Step 6: Final answer
   x = 13,139.40