Finding the Fourth Proportional to 7,423.72, 10,251.62 and 5,557.48

Step by Step Solution

1. Step 1: Write the proportion equation
   7,423.72 : 10,251.62 = 5,557.48 : x
2. Step 2: Convert to fraction form
   7,423.72/10,251.62 = 5,557.48/x
3. Step 3: Cross multiply
   7,423.72x = 10,251.62 × 5,557.48
4. Step 4: Simplify right side
   7,423.72x = 56,973,173.12
5. Step 5: Solve for x
   x = 56,973,173.12/7,423.72
6. Step 6: Final answer
   x = 7,674.48