Finding the Fourth Proportional to 7,015.52, 10,521.18 and 5,779.86

Step by Step Solution

1. Step 1: Write the proportion equation
   7,015.52 : 10,521.18 = 5,779.86 : x
2. Step 2: Convert to fraction form
   7,015.52/10,521.18 = 5,779.86/x
3. Step 3: Cross multiply
   7,015.52x = 10,521.18 × 5,779.86
4. Step 4: Simplify right side
   7,015.52x = 60,810,947.43
5. Step 5: Solve for x
   x = 60,810,947.43/7,015.52
6. Step 6: Final answer
   x = 8,668.06