Finding the Fourth Proportional to 10,375.91, 14,321.81 and 5,902.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,375.91 : 14,321.81 = 5,902.15 : x
2. Step 2: Convert to fraction form
   10,375.91/14,321.81 = 5,902.15/x
3. Step 3: Cross multiply
   10,375.91x = 14,321.81 × 5,902.15
4. Step 4: Simplify right side
   10,375.91x = 84,529,369.77
5. Step 5: Solve for x
   x = 84,529,369.77/10,375.91
6. Step 6: Final answer
   x = 8,146.69