Finding the Fourth Proportional to 21,062.52, 31,599.72 and 7,734.24

Step by Step Solution

1. Step 1: Write the proportion equation
   21,062.52 : 31,599.72 = 7,734.24 : x
2. Step 2: Convert to fraction form
   21,062.52/31,599.72 = 7,734.24/x
3. Step 3: Cross multiply
   21,062.52x = 31,599.72 × 7,734.24
4. Step 4: Simplify right side
   21,062.52x = 244,399,818.41
5. Step 5: Solve for x
   x = 244,399,818.41/21,062.52
6. Step 6: Final answer
   x = 11,603.54