Finding the Fourth Proportional to 10,845.72, 14,979.39 and 7,302.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,845.72 : 14,979.39 = 7,302.78 : x
2. Step 2: Convert to fraction form
   10,845.72/14,979.39 = 7,302.78/x
3. Step 3: Cross multiply
   10,845.72x = 14,979.39 × 7,302.78
4. Step 4: Simplify right side
   10,845.72x = 109,391,189.70
5. Step 5: Solve for x
   x = 109,391,189.70/10,845.72
6. Step 6: Final answer
   x = 10,086.12