Finding the Fourth Proportional to 7,862.52, 10,779.96 and 7,722.12

Step by Step Solution

1. Step 1: Write the proportion equation
   7,862.52 : 10,779.96 = 7,722.12 : x
2. Step 2: Convert to fraction form
   7,862.52/10,779.96 = 7,722.12/x
3. Step 3: Cross multiply
   7,862.52x = 10,779.96 × 7,722.12
4. Step 4: Simplify right side
   7,862.52x = 83,244,144.72
5. Step 5: Solve for x
   x = 83,244,144.72/7,862.52
6. Step 6: Final answer
   x = 10,587.46