Finding the Fourth Proportional to 23,897.86, 32,978.97 and 13,287.50

Step by Step Solution

1. Step 1: Write the proportion equation
   23,897.86 : 32,978.97 = 13,287.50 : x
2. Step 2: Convert to fraction form
   23,897.86/32,978.97 = 13,287.50/x
3. Step 3: Cross multiply
   23,897.86x = 32,978.97 × 13,287.50
4. Step 4: Simplify right side
   23,897.86x = 438,208,063.88
5. Step 5: Solve for x
   x = 438,208,063.88/23,897.86
6. Step 6: Final answer
   x = 18,336.71