Finding the Fourth Proportional to 34,856.10, 48,105.54 and 20,709

Step by Step Solution

1. Step 1: Write the proportion equation
   34,856.10 : 48,105.54 = 20,709 : x
2. Step 2: Convert to fraction form
   34,856.10/48,105.54 = 20,709/x
3. Step 3: Cross multiply
   34,856.10x = 48,105.54 × 20,709
4. Step 4: Simplify right side
   34,856.10x = 996,217,627.86
5. Step 5: Solve for x
   x = 996,217,627.86/34,856.10
6. Step 6: Final answer
   x = 28,580.87