Finding the Fourth Proportional to 9,178.06, 12,671.81 and 7,049.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,178.06 : 12,671.81 = 7,049.78 : x
2. Step 2: Convert to fraction form
   9,178.06/12,671.81 = 7,049.78/x
3. Step 3: Cross multiply
   9,178.06x = 12,671.81 × 7,049.78
4. Step 4: Simplify right side
   9,178.06x = 89,333,495.61
5. Step 5: Solve for x
   x = 89,333,495.61/9,178.06
6. Step 6: Final answer
   x = 9,733.38