Finding the Fourth Proportional to 21,070.72, 31,595.46 and 7,025.86

Step by Step Solution

1. Step 1: Write the proportion equation
   21,070.72 : 31,595.46 = 7,025.86 : x
2. Step 2: Convert to fraction form
   21,070.72/31,595.46 = 7,025.86/x
3. Step 3: Cross multiply
   21,070.72x = 31,595.46 × 7,025.86
4. Step 4: Simplify right side
   21,070.72x = 221,985,278.60
5. Step 5: Solve for x
   x = 221,985,278.60/21,070.72
6. Step 6: Final answer
   x = 10,535.25