Finding the Fourth Proportional to 7,279.09, 10,048.53 and 5,487.30

Step by Step Solution

1. Step 1: Write the proportion equation
   7,279.09 : 10,048.53 = 5,487.30 : x
2. Step 2: Convert to fraction form
   7,279.09/10,048.53 = 5,487.30/x
3. Step 3: Cross multiply
   7,279.09x = 10,048.53 × 5,487.30
4. Step 4: Simplify right side
   7,279.09x = 55,139,265.75
5. Step 5: Solve for x
   x = 55,139,265.75/7,279.09
6. Step 6: Final answer
   x = 7,575.02