Finding the Fourth Proportional to 17,720.78, 26,582.34 and 5,874.50

Step by Step Solution

1. Step 1: Write the proportion equation
   17,720.78 : 26,582.34 = 5,874.50 : x
2. Step 2: Convert to fraction form
   17,720.78/26,582.34 = 5,874.50/x
3. Step 3: Cross multiply
   17,720.78x = 26,582.34 × 5,874.50
4. Step 4: Simplify right side
   17,720.78x = 156,157,956.33
5. Step 5: Solve for x
   x = 156,157,956.33/17,720.78
6. Step 6: Final answer
   x = 8,812.14