Finding the Fourth Proportional to 11,142.07, 16,709.58 and 3,643.90

Step by Step Solution

1. Step 1: Write the proportion equation
   11,142.07 : 16,709.58 = 3,643.90 : x
2. Step 2: Convert to fraction form
   11,142.07/16,709.58 = 3,643.90/x
3. Step 3: Cross multiply
   11,142.07x = 16,709.58 × 3,643.90
4. Step 4: Simplify right side
   11,142.07x = 60,888,053.32
5. Step 5: Solve for x
   x = 60,888,053.32/11,142.07
6. Step 6: Final answer
   x = 5,464.70