Finding the Fourth Proportional to 12,363.51, 18,543.89 and 3,479.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,363.51 : 18,543.89 = 3,479.12 : x
2. Step 2: Convert to fraction form
   12,363.51/18,543.89 = 3,479.12/x
3. Step 3: Cross multiply
   12,363.51x = 18,543.89 × 3,479.12
4. Step 4: Simplify right side
   12,363.51x = 64,516,418.58
5. Step 5: Solve for x
   x = 64,516,418.58/12,363.51
6. Step 6: Final answer
   x = 5,218.29