Finding the Fourth Proportional to 10,019.52, 14,945.76 and 9,178.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,019.52 : 14,945.76 = 9,178.56 : x
2. Step 2: Convert to fraction form
   10,019.52/14,945.76 = 9,178.56/x
3. Step 3: Cross multiply
   10,019.52x = 14,945.76 × 9,178.56
4. Step 4: Simplify right side
   10,019.52x = 137,180,554.91
5. Step 5: Solve for x
   x = 137,180,554.91/10,019.52
6. Step 6: Final answer
   x = 13,691.33