Finding the Fourth Proportional to 23,300.76, 32,155.32 and 12,690.48

Step by Step Solution

1. Step 1: Write the proportion equation
   23,300.76 : 32,155.32 = 12,690.48 : x
2. Step 2: Convert to fraction form
   23,300.76/32,155.32 = 12,690.48/x
3. Step 3: Cross multiply
   23,300.76x = 32,155.32 × 12,690.48
4. Step 4: Simplify right side
   23,300.76x = 408,066,445.35
5. Step 5: Solve for x
   x = 408,066,445.35/23,300.76
6. Step 6: Final answer
   x = 17,513.01