Finding the Fourth Proportional to 13,463.20, 18,579.04 and 7,798.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,463.20 : 18,579.04 = 7,798.72 : x
2. Step 2: Convert to fraction form
   13,463.20/18,579.04 = 7,798.72/x
3. Step 3: Cross multiply
   13,463.20x = 18,579.04 × 7,798.72
4. Step 4: Simplify right side
   13,463.20x = 144,892,730.83
5. Step 5: Solve for x
   x = 144,892,730.83/13,463.20
6. Step 6: Final answer
   x = 10,762.13