Finding the Fourth Proportional to 23,897.60, 32,978.05 and 13,287.62

Step by Step Solution

1. Step 1: Write the proportion equation
   23,897.60 : 32,978.05 = 13,287.62 : x
2. Step 2: Convert to fraction form
   23,897.60/32,978.05 = 13,287.62/x
3. Step 3: Cross multiply
   23,897.60x = 32,978.05 × 13,287.62
4. Step 4: Simplify right side
   23,897.60x = 438,199,598.63
5. Step 5: Solve for x
   x = 438,199,598.63/23,897.60
6. Step 6: Final answer
   x = 18,336.55