Finding the Fourth Proportional to 23,300.86, 32,155.55 and 12,690.48

Step by Step Solution

1. Step 1: Write the proportion equation
   23,300.86 : 32,155.55 = 12,690.48 : x
2. Step 2: Convert to fraction form
   23,300.86/32,155.55 = 12,690.48/x
3. Step 3: Cross multiply
   23,300.86x = 32,155.55 × 12,690.48
4. Step 4: Simplify right side
   23,300.86x = 408,069,364.16
5. Step 5: Solve for x
   x = 408,069,364.16/23,300.86
6. Step 6: Final answer
   x = 17,513.06