Finding the Fourth Proportional to 7,011.52, 10,519.72 and 3,118.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,011.52 : 10,519.72 = 3,118.72 : x
2. Step 2: Convert to fraction form
   7,011.52/10,519.72 = 3,118.72/x
3. Step 3: Cross multiply
   7,011.52x = 10,519.72 × 3,118.72
4. Step 4: Simplify right side
   7,011.52x = 32,808,061.16
5. Step 5: Solve for x
   x = 32,808,061.16/7,011.52
6. Step 6: Final answer
   x = 4,679.17