Finding the Fourth Proportional to 13,046.88, 18,004.50 and 7,078.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,046.88 : 18,004.50 = 7,078.56 : x
2. Step 2: Convert to fraction form
   13,046.88/18,004.50 = 7,078.56/x
3. Step 3: Cross multiply
   13,046.88x = 18,004.50 × 7,078.56
4. Step 4: Simplify right side
   13,046.88x = 127,445,933.52
5. Step 5: Solve for x
   x = 127,445,933.52/13,046.88
6. Step 6: Final answer
   x = 9,768.31