Finding the Fourth Proportional to 15,780.52, 23,674.90 and 5,919.99

Step by Step Solution

1. Step 1: Write the proportion equation
   15,780.52 : 23,674.90 = 5,919.99 : x
2. Step 2: Convert to fraction form
   15,780.52/23,674.90 = 5,919.99/x
3. Step 3: Cross multiply
   15,780.52x = 23,674.90 × 5,919.99
4. Step 4: Simplify right side
   15,780.52x = 140,155,023.28
5. Step 5: Solve for x
   x = 140,155,023.28/15,780.52
6. Step 6: Final answer
   x = 8,881.52