Finding the Fourth Proportional to 21,051.15, 31,569.89 and 7,007.41

Step by Step Solution

1. Step 1: Write the proportion equation
   21,051.15 : 31,569.89 = 7,007.41 : x
2. Step 2: Convert to fraction form
   21,051.15/31,569.89 = 7,007.41/x
3. Step 3: Cross multiply
   21,051.15x = 31,569.89 × 7,007.41
4. Step 4: Simplify right side
   21,051.15x = 221,223,058.12
5. Step 5: Solve for x
   x = 221,223,058.12/21,051.15
6. Step 6: Final answer
   x = 10,508.83