Finding the Fourth Proportional to 21,174.83, 31,754.17 and 7,131.08

Step by Step Solution

1. Step 1: Write the proportion equation
   21,174.83 : 31,754.17 = 7,131.08 : x
2. Step 2: Convert to fraction form
   21,174.83/31,754.17 = 7,131.08/x
3. Step 3: Cross multiply
   21,174.83x = 31,754.17 × 7,131.08
4. Step 4: Simplify right side
   21,174.83x = 226,441,588.16
5. Step 5: Solve for x
   x = 226,441,588.16/21,174.83
6. Step 6: Final answer
   x = 10,693.91