Finding the Fourth Proportional to 17,736.20, 24,476.12 and 9,778.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,736.20 : 24,476.12 = 9,778.72 : x
2. Step 2: Convert to fraction form
   17,736.20/24,476.12 = 9,778.72/x
3. Step 3: Cross multiply
   17,736.20x = 24,476.12 × 9,778.72
4. Step 4: Simplify right side
   17,736.20x = 239,345,124.17
5. Step 5: Solve for x
   x = 239,345,124.17/17,736.20
6. Step 6: Final answer
   x = 13,494.72