Finding the Fourth Proportional to 10,098.94, 15,162.54 and 5,171.98

Step by Step Solution

1. Step 1: Write the proportion equation
   10,098.94 : 15,162.54 = 5,171.98 : x
2. Step 2: Convert to fraction form
   10,098.94/15,162.54 = 5,171.98/x
3. Step 3: Cross multiply
   10,098.94x = 15,162.54 × 5,171.98
4. Step 4: Simplify right side
   10,098.94x = 78,420,353.63
5. Step 5: Solve for x
   x = 78,420,353.63/10,098.94
6. Step 6: Final answer
   x = 7,765.21