Finding the Fourth Proportional to 12,284.51, 18,426.69 and 3,519.45

Step by Step Solution

1. Step 1: Write the proportion equation
   12,284.51 : 18,426.69 = 3,519.45 : x
2. Step 2: Convert to fraction form
   12,284.51/18,426.69 = 3,519.45/x
3. Step 3: Cross multiply
   12,284.51x = 18,426.69 × 3,519.45
4. Step 4: Simplify right side
   12,284.51x = 64,851,814.12
5. Step 5: Solve for x
   x = 64,851,814.12/12,284.51
6. Step 6: Final answer
   x = 5,279.15