Finding the Fourth Proportional to 10,099.38, 15,139.71 and 4,474.07

Step by Step Solution

1. Step 1: Write the proportion equation
   10,099.38 : 15,139.71 = 4,474.07 : x
2. Step 2: Convert to fraction form
   10,099.38/15,139.71 = 4,474.07/x
3. Step 3: Cross multiply
   10,099.38x = 15,139.71 × 4,474.07
4. Step 4: Simplify right side
   10,099.38x = 67,736,103.40
5. Step 5: Solve for x
   x = 67,736,103.40/10,099.38
6. Step 6: Final answer
   x = 6,706.95