Finding the Fourth Proportional to 8,779.76, 12,116.92 and 5,003.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,779.76 : 12,116.92 = 5,003.86 : x
2. Step 2: Convert to fraction form
   8,779.76/12,116.92 = 5,003.86/x
3. Step 3: Cross multiply
   8,779.76x = 12,116.92 × 5,003.86
4. Step 4: Simplify right side
   8,779.76x = 60,631,371.31
5. Step 5: Solve for x
   x = 60,631,371.31/8,779.76
6. Step 6: Final answer
   x = 6,905.81