Finding the Fourth Proportional to 10,678.18, 16,006.13 and 3,656.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,678.18 : 16,006.13 = 3,656.12 : x
2. Step 2: Convert to fraction form
   10,678.18/16,006.13 = 3,656.12/x
3. Step 3: Cross multiply
   10,678.18x = 16,006.13 × 3,656.12
4. Step 4: Simplify right side
   10,678.18x = 58,520,332.02
5. Step 5: Solve for x
   x = 58,520,332.02/10,678.18
6. Step 6: Final answer
   x = 5,480.37