Finding the Fourth Proportional to 7,519.80, 10,381.47 and 5,630.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,519.80 : 10,381.47 = 5,630.72 : x
2. Step 2: Convert to fraction form
   7,519.80/10,381.47 = 5,630.72/x
3. Step 3: Cross multiply
   7,519.80x = 10,381.47 × 5,630.72
4. Step 4: Simplify right side
   7,519.80x = 58,455,098.85
5. Step 5: Solve for x
   x = 58,455,098.85/7,519.80
6. Step 6: Final answer
   x = 7,773.49