Finding the Fourth Proportional to 23,691.33, 32,691.39 and 13,078.31

Step by Step Solution

1. Step 1: Write the proportion equation
   23,691.33 : 32,691.39 = 13,078.31 : x
2. Step 2: Convert to fraction form
   23,691.33/32,691.39 = 13,078.31/x
3. Step 3: Cross multiply
   23,691.33x = 32,691.39 × 13,078.31
4. Step 4: Simplify right side
   23,691.33x = 427,547,969.29
5. Step 5: Solve for x
   x = 427,547,969.29/23,691.33
6. Step 6: Final answer
   x = 18,046.60