Finding the Fourth Proportional to 12,218.76, 16,877.72 and 9,038.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,218.76 : 16,877.72 = 9,038.52 : x
2. Step 2: Convert to fraction form
   12,218.76/16,877.72 = 9,038.52/x
3. Step 3: Cross multiply
   12,218.76x = 16,877.72 × 9,038.52
4. Step 4: Simplify right side
   12,218.76x = 152,549,609.77
5. Step 5: Solve for x
   x = 152,549,609.77/12,218.76
6. Step 6: Final answer
   x = 12,484.87