Finding the Fourth Proportional to 17,736.72, 24,477.78 and 9,778.94

Step by Step Solution

1. Step 1: Write the proportion equation
   17,736.72 : 24,477.78 = 9,778.94 : x
2. Step 2: Convert to fraction form
   17,736.72/24,477.78 = 9,778.94/x
3. Step 3: Cross multiply
   17,736.72x = 24,477.78 × 9,778.94
4. Step 4: Simplify right side
   17,736.72x = 239,366,741.95
5. Step 5: Solve for x
   x = 239,366,741.95/17,736.72
6. Step 6: Final answer
   x = 13,495.55