Finding the Fourth Proportional to 10,833.76, 16,178.32 and 10,280.22

Step by Step Solution

1. Step 1: Write the proportion equation
   10,833.76 : 16,178.32 = 10,280.22 : x
2. Step 2: Convert to fraction form
   10,833.76/16,178.32 = 10,280.22/x
3. Step 3: Cross multiply
   10,833.76x = 16,178.32 × 10,280.22
4. Step 4: Simplify right side
   10,833.76x = 166,316,688.83
5. Step 5: Solve for x
   x = 166,316,688.83/10,833.76
6. Step 6: Final answer
   x = 15,351.71