Finding the Fourth Proportional to 28,156.32, 38,862.72 and 17,558.28

Step by Step Solution

1. Step 1: Write the proportion equation
   28,156.32 : 38,862.72 = 17,558.28 : x
2. Step 2: Convert to fraction form
   28,156.32/38,862.72 = 17,558.28/x
3. Step 3: Cross multiply
   28,156.32x = 38,862.72 × 17,558.28
4. Step 4: Simplify right side
   28,156.32x = 682,362,519.32
5. Step 5: Solve for x
   x = 682,362,519.32/28,156.32
6. Step 6: Final answer
   x = 24,234.79