Finding the Fourth Proportional to 52,856.72, 79,285.01 and 12,875.67

Step by Step Solution

1. Step 1: Write the proportion equation
   52,856.72 : 79,285.01 = 12,875.67 : x
2. Step 2: Convert to fraction form
   52,856.72/79,285.01 = 12,875.67/x
3. Step 3: Cross multiply
   52,856.72x = 79,285.01 × 12,875.67
4. Step 4: Simplify right side
   52,856.72x = 1,020,847,560.33
5. Step 5: Solve for x
   x = 1,020,847,560.33/52,856.72
6. Step 6: Final answer
   x = 19,313.49