Finding the Fourth Proportional to 12,068.56, 16,637.17 and 8,472.57

Step by Step Solution

1. Step 1: Write the proportion equation
   12,068.56 : 16,637.17 = 8,472.57 : x
2. Step 2: Convert to fraction form
   12,068.56/16,637.17 = 8,472.57/x
3. Step 3: Cross multiply
   12,068.56x = 16,637.17 × 8,472.57
4. Step 4: Simplify right side
   12,068.56x = 140,959,587.43
5. Step 5: Solve for x
   x = 140,959,587.43/12,068.56
6. Step 6: Final answer
   x = 11,679.90