Finding the Fourth Proportional to 12,814.31, 19,224.71 and 3,580.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,814.31 : 19,224.71 = 3,580.31 : x
2. Step 2: Convert to fraction form
   12,814.31/19,224.71 = 3,580.31/x
3. Step 3: Cross multiply
   12,814.31x = 19,224.71 × 3,580.31
4. Step 4: Simplify right side
   12,814.31x = 68,830,465.05
5. Step 5: Solve for x
   x = 68,830,465.05/12,814.31
6. Step 6: Final answer
   x = 5,371.37