Finding the Fourth Proportional to 20,648.52, 30,972.24 and 5,065.74

Step by Step Solution

1. Step 1: Write the proportion equation
   20,648.52 : 30,972.24 = 5,065.74 : x
2. Step 2: Convert to fraction form
   20,648.52/30,972.24 = 5,065.74/x
3. Step 3: Cross multiply
   20,648.52x = 30,972.24 × 5,065.74
4. Step 4: Simplify right side
   20,648.52x = 156,897,315.06
5. Step 5: Solve for x
   x = 156,897,315.06/20,648.52
6. Step 6: Final answer
   x = 7,598.48