Finding the Fourth Proportional to 13,378.52, 18,463.98 and 7,789.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,378.52 : 18,463.98 = 7,789.56 : x
2. Step 2: Convert to fraction form
   13,378.52/18,463.98 = 7,789.56/x
3. Step 3: Cross multiply
   13,378.52x = 18,463.98 × 7,789.56
4. Step 4: Simplify right side
   13,378.52x = 143,826,280.05
5. Step 5: Solve for x
   x = 143,826,280.05/13,378.52
6. Step 6: Final answer
   x = 10,750.54