Finding the Fourth Proportional to 23,300.66, 32,155.27 and 12,690.28

Step by Step Solution

1. Step 1: Write the proportion equation
   23,300.66 : 32,155.27 = 12,690.28 : x
2. Step 2: Convert to fraction form
   23,300.66/32,155.27 = 12,690.28/x
3. Step 3: Cross multiply
   23,300.66x = 32,155.27 × 12,690.28
4. Step 4: Simplify right side
   23,300.66x = 408,059,267.66
5. Step 5: Solve for x
   x = 408,059,267.66/23,300.66
6. Step 6: Final answer
   x = 17,512.78