Finding the Fourth Proportional to 23,300.42, 32,154.95 and 12,690.04

Step by Step Solution

1. Step 1: Write the proportion equation
   23,300.42 : 32,154.95 = 12,690.04 : x
2. Step 2: Convert to fraction form
   23,300.42/32,154.95 = 12,690.04/x
3. Step 3: Cross multiply
   23,300.42x = 32,154.95 × 12,690.04
4. Step 4: Simplify right side
   23,300.42x = 408,047,618.64
5. Step 5: Solve for x
   x = 408,047,618.64/23,300.42
6. Step 6: Final answer
   x = 17,512.46