Finding the Fourth Proportional to 23,897.86, 32,978.62 and 13,287.26

Step by Step Solution

1. Step 1: Write the proportion equation
   23,897.86 : 32,978.62 = 13,287.26 : x
2. Step 2: Convert to fraction form
   23,897.86/32,978.62 = 13,287.26/x
3. Step 3: Cross multiply
   23,897.86x = 32,978.62 × 13,287.26
4. Step 4: Simplify right side
   23,897.86x = 438,195,498.38
5. Step 5: Solve for x
   x = 438,195,498.38/23,897.86
6. Step 6: Final answer
   x = 18,336.18