Finding the Fourth Proportional to 9,890.92, 14,838.54 and 4,960.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,890.92 : 14,838.54 = 4,960.72 : x
2. Step 2: Convert to fraction form
   9,890.92/14,838.54 = 4,960.72/x
3. Step 3: Cross multiply
   9,890.92x = 14,838.54 × 4,960.72
4. Step 4: Simplify right side
   9,890.92x = 73,609,842.15
5. Step 5: Solve for x
   x = 73,609,842.15/9,890.92
6. Step 6: Final answer
   x = 7,442.16