Finding the Fourth Proportional to 21,175.49, 31,753.98 and 7,131.76

Step by Step Solution

1. Step 1: Write the proportion equation
   21,175.49 : 31,753.98 = 7,131.76 : x
2. Step 2: Convert to fraction form
   21,175.49/31,753.98 = 7,131.76/x
3. Step 3: Cross multiply
   21,175.49x = 31,753.98 × 7,131.76
4. Step 4: Simplify right side
   21,175.49x = 226,461,685.02
5. Step 5: Solve for x
   x = 226,461,685.02/21,175.49
6. Step 6: Final answer
   x = 10,694.52