Finding the Fourth Proportional to 23,842.90, 32,902.56 and 13,087.78

Step by Step Solution

1. Step 1: Write the proportion equation
   23,842.90 : 32,902.56 = 13,087.78 : x
2. Step 2: Convert to fraction form
   23,842.90/32,902.56 = 13,087.78/x
3. Step 3: Cross multiply
   23,842.90x = 32,902.56 × 13,087.78
4. Step 4: Simplify right side
   23,842.90x = 430,621,466.72
5. Step 5: Solve for x
   x = 430,621,466.72/23,842.90
6. Step 6: Final answer
   x = 18,060.78