Finding the Fourth Proportional to 23,290.61, 32,142.18 and 13,730.81

Step by Step Solution

1. Step 1: Write the proportion equation
   23,290.61 : 32,142.18 = 13,730.81 : x
2. Step 2: Convert to fraction form
   23,290.61/32,142.18 = 13,730.81/x
3. Step 3: Cross multiply
   23,290.61x = 32,142.18 × 13,730.81
4. Step 4: Simplify right side
   23,290.61x = 441,338,166.57
5. Step 5: Solve for x
   x = 441,338,166.57/23,290.61
6. Step 6: Final answer
   x = 18,949.19