Finding the Fourth Proportional to 20,877.90, 31,320.09 and 7,025.82

Step by Step Solution

1. Step 1: Write the proportion equation
   20,877.90 : 31,320.09 = 7,025.82 : x
2. Step 2: Convert to fraction form
   20,877.90/31,320.09 = 7,025.82/x
3. Step 3: Cross multiply
   20,877.90x = 31,320.09 × 7,025.82
4. Step 4: Simplify right side
   20,877.90x = 220,049,314.72
5. Step 5: Solve for x
   x = 220,049,314.72/20,877.90
6. Step 6: Final answer
   x = 10,539.82