Finding the Fourth Proportional to 12,250.60, 16,887.72 and 9,558.79

Step by Step Solution

1. Step 1: Write the proportion equation
   12,250.60 : 16,887.72 = 9,558.79 : x
2. Step 2: Convert to fraction form
   12,250.60/16,887.72 = 9,558.79/x
3. Step 3: Cross multiply
   12,250.60x = 16,887.72 × 9,558.79
4. Step 4: Simplify right side
   12,250.60x = 161,426,169.06
5. Step 5: Solve for x
   x = 161,426,169.06/12,250.60
6. Step 6: Final answer
   x = 13,177.00