Finding the Fourth Proportional to 9,013.56, 12,502.35 and 8,773.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,013.56 : 12,502.35 = 8,773.80 : x
2. Step 2: Convert to fraction form
   9,013.56/12,502.35 = 8,773.80/x
3. Step 3: Cross multiply
   9,013.56x = 12,502.35 × 8,773.80
4. Step 4: Simplify right side
   9,013.56x = 109,693,118.43
5. Step 5: Solve for x
   x = 109,693,118.43/9,013.56
6. Step 6: Final answer
   x = 12,169.79