Finding the Fourth Proportional to 21,025.72, 28,985.34 and 16,541.69

Step by Step Solution

1. Step 1: Write the proportion equation
   21,025.72 : 28,985.34 = 16,541.69 : x
2. Step 2: Convert to fraction form
   21,025.72/28,985.34 = 16,541.69/x
3. Step 3: Cross multiply
   21,025.72x = 28,985.34 × 16,541.69
4. Step 4: Simplify right side
   21,025.72x = 479,466,508.82
5. Step 5: Solve for x
   x = 479,466,508.82/21,025.72
6. Step 6: Final answer
   x = 22,803.81