Finding the Fourth Proportional to 21,124.89, 31,675.73 and 7,077.53

Step by Step Solution

1. Step 1: Write the proportion equation
   21,124.89 : 31,675.73 = 7,077.53 : x
2. Step 2: Convert to fraction form
   21,124.89/31,675.73 = 7,077.53/x
3. Step 3: Cross multiply
   21,124.89x = 31,675.73 × 7,077.53
4. Step 4: Simplify right side
   21,124.89x = 224,185,973.15
5. Step 5: Solve for x
   x = 224,185,973.15/21,124.89
6. Step 6: Final answer
   x = 10,612.41