Finding the Fourth Proportional to 12,048.80, 18,071.43 and 7,053.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,048.80 : 18,071.43 = 7,053.48 : x
2. Step 2: Convert to fraction form
   12,048.80/18,071.43 = 7,053.48/x
3. Step 3: Cross multiply
   12,048.80x = 18,071.43 × 7,053.48
4. Step 4: Simplify right side
   12,048.80x = 127,466,463.46
5. Step 5: Solve for x
   x = 127,466,463.46/12,048.80
6. Step 6: Final answer
   x = 10,579.18