Finding the Fourth Proportional to 8,780.22, 12,116.58 and 5,003.61

Step by Step Solution

1. Step 1: Write the proportion equation
   8,780.22 : 12,116.58 = 5,003.61 : x
2. Step 2: Convert to fraction form
   8,780.22/12,116.58 = 5,003.61/x
3. Step 3: Cross multiply
   8,780.22x = 12,116.58 × 5,003.61
4. Step 4: Simplify right side
   8,780.22x = 60,626,580.27
5. Step 5: Solve for x
   x = 60,626,580.27/8,780.22
6. Step 6: Final answer
   x = 6,904.91