Finding the Fourth Proportional to 23,900.61, 32,982.86 and 13,290.01

Step by Step Solution

1. Step 1: Write the proportion equation
   23,900.61 : 32,982.86 = 13,290.01 : x
2. Step 2: Convert to fraction form
   23,900.61/32,982.86 = 13,290.01/x
3. Step 3: Cross multiply
   23,900.61x = 32,982.86 × 13,290.01
4. Step 4: Simplify right side
   23,900.61x = 438,342,657.18
5. Step 5: Solve for x
   x = 438,342,657.18/23,900.61
6. Step 6: Final answer
   x = 18,340.23