Finding the Fourth Proportional to 12,779.54, 17,632.05 and 7,401.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,779.54 : 17,632.05 = 7,401.62 : x
2. Step 2: Convert to fraction form
   12,779.54/17,632.05 = 7,401.62/x
3. Step 3: Cross multiply
   12,779.54x = 17,632.05 × 7,401.62
4. Step 4: Simplify right side
   12,779.54x = 130,505,733.92
5. Step 5: Solve for x
   x = 130,505,733.92/12,779.54
6. Step 6: Final answer
   x = 10,212.08