Finding the Fourth Proportional to 8,779.96, 12,114.86 and 5,423.32

Step by Step Solution

1. Step 1: Write the proportion equation
   8,779.96 : 12,114.86 = 5,423.32 : x
2. Step 2: Convert to fraction form
   8,779.96/12,114.86 = 5,423.32/x
3. Step 3: Cross multiply
   8,779.96x = 12,114.86 × 5,423.32
4. Step 4: Simplify right side
   8,779.96x = 65,702,762.54
5. Step 5: Solve for x
   x = 65,702,762.54/8,779.96
6. Step 6: Final answer
   x = 7,483.26