Finding the Fourth Proportional to 5,124.15, 7,070.81 and 2,885.67

Step by Step Solution

1. Step 1: Write the proportion equation
   5,124.15 : 7,070.81 = 2,885.67 : x
2. Step 2: Convert to fraction form
   5,124.15/7,070.81 = 2,885.67/x
3. Step 3: Cross multiply
   5,124.15x = 7,070.81 × 2,885.67
4. Step 4: Simplify right side
   5,124.15x = 20,404,009.86
5. Step 5: Solve for x
   x = 20,404,009.86/5,124.15
6. Step 6: Final answer
   x = 3,981.93