Finding the Fourth Proportional to 9,306.84, 12,830.22 and 7,401.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,306.84 : 12,830.22 = 7,401.72 : x
2. Step 2: Convert to fraction form
   9,306.84/12,830.22 = 7,401.72/x
3. Step 3: Cross multiply
   9,306.84x = 12,830.22 × 7,401.72
4. Step 4: Simplify right side
   9,306.84x = 94,965,695.98
5. Step 5: Solve for x
   x = 94,965,695.98/9,306.84
6. Step 6: Final answer
   x = 10,203.86