Finding the Fourth Proportional to 7,279.61, 10,045.86 and 3,967.61

Step by Step Solution

1. Step 1: Write the proportion equation
   7,279.61 : 10,045.86 = 3,967.61 : x
2. Step 2: Convert to fraction form
   7,279.61/10,045.86 = 3,967.61/x
3. Step 3: Cross multiply
   7,279.61x = 10,045.86 × 3,967.61
4. Step 4: Simplify right side
   7,279.61x = 39,858,054.59
5. Step 5: Solve for x
   x = 39,858,054.59/7,279.61
6. Step 6: Final answer
   x = 5,475.30