Finding the Fourth Proportional to 23,897.65, 32,978.59 and 13,287.19

Step by Step Solution

1. Step 1: Write the proportion equation
   23,897.65 : 32,978.59 = 13,287.19 : x
2. Step 2: Convert to fraction form
   23,897.65/32,978.59 = 13,287.19/x
3. Step 3: Cross multiply
   23,897.65x = 32,978.59 × 13,287.19
4. Step 4: Simplify right side
   23,897.65x = 438,192,724.83
5. Step 5: Solve for x
   x = 438,192,724.83/23,897.65
6. Step 6: Final answer
   x = 18,336.23