Finding the Fourth Proportional to 5,123.52, 7,070.58 and 2,885.22

Step by Step Solution

1. Step 1: Write the proportion equation
   5,123.52 : 7,070.58 = 2,885.22 : x
2. Step 2: Convert to fraction form
   5,123.52/7,070.58 = 2,885.22/x
3. Step 3: Cross multiply
   5,123.52x = 7,070.58 × 2,885.22
4. Step 4: Simplify right side
   5,123.52x = 20,400,178.83
5. Step 5: Solve for x
   x = 20,400,178.83/5,123.52
6. Step 6: Final answer
   x = 3,981.67