Finding the Fourth Proportional to 21,082.80, 31,613.52 and 7,037.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,082.80 : 31,613.52 = 7,037.82 : x
2. Step 2: Convert to fraction form
   21,082.80/31,613.52 = 7,037.82/x
3. Step 3: Cross multiply
   21,082.80x = 31,613.52 × 7,037.82
4. Step 4: Simplify right side
   21,082.80x = 222,490,263.33
5. Step 5: Solve for x
   x = 222,490,263.33/21,082.80
6. Step 6: Final answer
   x = 10,553.16