Finding the Fourth Proportional to 12,199.59, 18,300.47 and 3,434.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,199.59 : 18,300.47 = 3,434.58 : x
2. Step 2: Convert to fraction form
   12,199.59/18,300.47 = 3,434.58/x
3. Step 3: Cross multiply
   12,199.59x = 18,300.47 × 3,434.58
4. Step 4: Simplify right side
   12,199.59x = 62,854,411.08
5. Step 5: Solve for x
   x = 62,854,411.08/12,199.59
6. Step 6: Final answer
   x = 5,152.17