Finding the Fourth Proportional to 10,109.31, 15,164.10 and 5,433.45

Step by Step Solution

1. Step 1: Write the proportion equation
   10,109.31 : 15,164.10 = 5,433.45 : x
2. Step 2: Convert to fraction form
   10,109.31/15,164.10 = 5,433.45/x
3. Step 3: Cross multiply
   10,109.31x = 15,164.10 × 5,433.45
4. Step 4: Simplify right side
   10,109.31x = 82,393,379.15
5. Step 5: Solve for x
   x = 82,393,379.15/10,109.31
6. Step 6: Final answer
   x = 8,150.25