Finding the Fourth Proportional to 12,443.70, 18,659.64 and 5,042.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,443.70 : 18,659.64 = 5,042.48 : x
2. Step 2: Convert to fraction form
   12,443.70/18,659.64 = 5,042.48/x
3. Step 3: Cross multiply
   12,443.70x = 18,659.64 × 5,042.48
4. Step 4: Simplify right side
   12,443.70x = 94,090,861.51
5. Step 5: Solve for x
   x = 94,090,861.51/12,443.70
6. Step 6: Final answer
   x = 7,561.33