Finding the Fourth Proportional to 12,724.69, 17,554.02 and 8,477.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,724.69 : 17,554.02 = 8,477.72 : x
2. Step 2: Convert to fraction form
   12,724.69/17,554.02 = 8,477.72/x
3. Step 3: Cross multiply
   12,724.69x = 17,554.02 × 8,477.72
4. Step 4: Simplify right side
   12,724.69x = 148,818,066.43
5. Step 5: Solve for x
   x = 148,818,066.43/12,724.69
6. Step 6: Final answer
   x = 11,695.23