Finding the Fourth Proportional to 23,053.60, 31,814.16 and 12,982.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,053.60 : 31,814.16 = 12,982.72 : x
2. Step 2: Convert to fraction form
   23,053.60/31,814.16 = 12,982.72/x
3. Step 3: Cross multiply
   23,053.60x = 31,814.16 × 12,982.72
4. Step 4: Simplify right side
   23,053.60x = 413,034,331.32
5. Step 5: Solve for x
   x = 413,034,331.32/23,053.60
6. Step 6: Final answer
   x = 17,916.26