Finding the Fourth Proportional to 12,783.59, 19,174.04 and 3,424.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,783.59 : 19,174.04 = 3,424.58 : x
2. Step 2: Convert to fraction form
   12,783.59/19,174.04 = 3,424.58/x
3. Step 3: Cross multiply
   12,783.59x = 19,174.04 × 3,424.58
4. Step 4: Simplify right side
   12,783.59x = 65,662,920.91
5. Step 5: Solve for x
   x = 65,662,920.91/12,783.59
6. Step 6: Final answer
   x = 5,136.50