Finding the Fourth Proportional to 23,290.12, 32,140.95 and 12,680.34

Step by Step Solution

1. Step 1: Write the proportion equation
   23,290.12 : 32,140.95 = 12,680.34 : x
2. Step 2: Convert to fraction form
   23,290.12/32,140.95 = 12,680.34/x
3. Step 3: Cross multiply
   23,290.12x = 32,140.95 × 12,680.34
4. Step 4: Simplify right side
   23,290.12x = 407,557,949.82
5. Step 5: Solve for x
   x = 407,557,949.82/23,290.12
6. Step 6: Final answer
   x = 17,499.18