Finding the Fourth Proportional to 12,308.77, 18,465.91 and 3,543

Step by Step Solution

1. Step 1: Write the proportion equation
   12,308.77 : 18,465.91 = 3,543 : x
2. Step 2: Convert to fraction form
   12,308.77/18,465.91 = 3,543/x
3. Step 3: Cross multiply
   12,308.77x = 18,465.91 × 3,543
4. Step 4: Simplify right side
   12,308.77x = 65,424,719.13
5. Step 5: Solve for x
   x = 65,424,719.13/12,308.77
6. Step 6: Final answer
   x = 5,315.29