Finding the Fourth Proportional to 21,083.55, 31,614.58 and 7,038.53

Step by Step Solution

1. Step 1: Write the proportion equation
   21,083.55 : 31,614.58 = 7,038.53 : x
2. Step 2: Convert to fraction form
   21,083.55/31,614.58 = 7,038.53/x
3. Step 3: Cross multiply
   21,083.55x = 31,614.58 × 7,038.53
4. Step 4: Simplify right side
   21,083.55x = 222,520,099.46
5. Step 5: Solve for x
   x = 222,520,099.46/21,083.55
6. Step 6: Final answer
   x = 10,554.21