Finding the Fourth Proportional to 23,897.70, 32,978.52 and 13,287.30

Step by Step Solution

1. Step 1: Write the proportion equation
   23,897.70 : 32,978.52 = 13,287.30 : x
2. Step 2: Convert to fraction form
   23,897.70/32,978.52 = 13,287.30/x
3. Step 3: Cross multiply
   23,897.70x = 32,978.52 × 13,287.30
4. Step 4: Simplify right side
   23,897.70x = 438,195,488.80
5. Step 5: Solve for x
   x = 438,195,488.80/23,897.70
6. Step 6: Final answer
   x = 18,336.30