Finding the Fourth Proportional to 21,045.89, 31,565.57 and 7,006.10

Step by Step Solution

1. Step 1: Write the proportion equation
   21,045.89 : 31,565.57 = 7,006.10 : x
2. Step 2: Convert to fraction form
   21,045.89/31,565.57 = 7,006.10/x
3. Step 3: Cross multiply
   21,045.89x = 31,565.57 × 7,006.10
4. Step 4: Simplify right side
   21,045.89x = 221,151,347.12
5. Step 5: Solve for x
   x = 221,151,347.12/21,045.89
6. Step 6: Final answer
   x = 10,508.05