Finding the Fourth Proportional to 10,758.86, 16,139.28 and 4,185.54

Step by Step Solution

1. Step 1: Write the proportion equation
   10,758.86 : 16,139.28 = 4,185.54 : x
2. Step 2: Convert to fraction form
   10,758.86/16,139.28 = 4,185.54/x
3. Step 3: Cross multiply
   10,758.86x = 16,139.28 × 4,185.54
4. Step 4: Simplify right side
   10,758.86x = 67,551,602.01
5. Step 5: Solve for x
   x = 67,551,602.01/10,758.86
6. Step 6: Final answer
   x = 6,278.70