Finding the Fourth Proportional to 5,124.29, 7,071.56 and 2,885.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,124.29 : 7,071.56 = 2,885.72 : x
2. Step 2: Convert to fraction form
   5,124.29/7,071.56 = 2,885.72/x
3. Step 3: Cross multiply
   5,124.29x = 7,071.56 × 2,885.72
4. Step 4: Simplify right side
   5,124.29x = 20,406,492.34
5. Step 5: Solve for x
   x = 20,406,492.34/5,124.29
6. Step 6: Final answer
   x = 3,982.31