Finding the Fourth Proportional to 9,016.32, 12,430.80 and 6,618.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,016.32 : 12,430.80 = 6,618.72 : x
2. Step 2: Convert to fraction form
   9,016.32/12,430.80 = 6,618.72/x
3. Step 3: Cross multiply
   9,016.32x = 12,430.80 × 6,618.72
4. Step 4: Simplify right side
   9,016.32x = 82,275,984.58
5. Step 5: Solve for x
   x = 82,275,984.58/9,016.32
6. Step 6: Final answer
   x = 9,125.23