Finding the Fourth Proportional to 8,779.98, 12,116.33 and 5,003.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,779.98 : 12,116.33 = 5,003.31 : x
2. Step 2: Convert to fraction form
   8,779.98/12,116.33 = 5,003.31/x
3. Step 3: Cross multiply
   8,779.98x = 12,116.33 × 5,003.31
4. Step 4: Simplify right side
   8,779.98x = 60,621,730.04
5. Step 5: Solve for x
   x = 60,621,730.04/8,779.98
6. Step 6: Final answer
   x = 6,904.54