Finding the Fourth Proportional to 12,916.36, 19,382.01 and 5,419.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,916.36 : 19,382.01 = 5,419.25 : x
2. Step 2: Convert to fraction form
   12,916.36/19,382.01 = 5,419.25/x
3. Step 3: Cross multiply
   12,916.36x = 19,382.01 × 5,419.25
4. Step 4: Simplify right side
   12,916.36x = 105,035,860.78
5. Step 5: Solve for x
   x = 105,035,860.78/12,916.36
6. Step 6: Final answer
   x = 8,132.00