Finding the Fourth Proportional to 23,889.69, 32,968.89 and 13,279.50

Step by Step Solution

1. Step 1: Write the proportion equation
   23,889.69 : 32,968.89 = 13,279.50 : x
2. Step 2: Convert to fraction form
   23,889.69/32,968.89 = 13,279.50/x
3. Step 3: Cross multiply
   23,889.69x = 32,968.89 × 13,279.50
4. Step 4: Simplify right side
   23,889.69x = 437,810,374.76
5. Step 5: Solve for x
   x = 437,810,374.76/23,889.69
6. Step 6: Final answer
   x = 18,326.33