Finding the Fourth Proportional to 32,728.88, 45,162.05 and 18,386.72

Step by Step Solution

1. Step 1: Write the proportion equation
   32,728.88 : 45,162.05 = 18,386.72 : x
2. Step 2: Convert to fraction form
   32,728.88/45,162.05 = 18,386.72/x
3. Step 3: Cross multiply
   32,728.88x = 45,162.05 × 18,386.72
4. Step 4: Simplify right side
   32,728.88x = 830,381,650.23
5. Step 5: Solve for x
   x = 830,381,650.23/32,728.88
6. Step 6: Final answer
   x = 25,371.53