Finding the Fourth Proportional to 15,443.49, 21,185.16 and 15,032.82

Step by Step Solution

1. Step 1: Write the proportion equation
   15,443.49 : 21,185.16 = 15,032.82 : x
2. Step 2: Convert to fraction form
   15,443.49/21,185.16 = 15,032.82/x
3. Step 3: Cross multiply
   15,443.49x = 21,185.16 × 15,032.82
4. Step 4: Simplify right side
   15,443.49x = 318,472,696.95
5. Step 5: Solve for x
   x = 318,472,696.95/15,443.49
6. Step 6: Final answer
   x = 20,621.81