Finding the Fourth Proportional to 23,681.32, 32,681.31 and 13,613.02

Step by Step Solution

1. Step 1: Write the proportion equation
   23,681.32 : 32,681.31 = 13,613.02 : x
2. Step 2: Convert to fraction form
   23,681.32/32,681.31 = 13,613.02/x
3. Step 3: Cross multiply
   23,681.32x = 32,681.31 × 13,613.02
4. Step 4: Simplify right side
   23,681.32x = 444,891,326.66
5. Step 5: Solve for x
   x = 444,891,326.66/23,681.32
6. Step 6: Final answer
   x = 18,786.59