Finding the Fourth Proportional to 12,682.19, 19,025.33 and 3,915.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,682.19 : 19,025.33 = 3,915.05 : x
2. Step 2: Convert to fraction form
   12,682.19/19,025.33 = 3,915.05/x
3. Step 3: Cross multiply
   12,682.19x = 19,025.33 × 3,915.05
4. Step 4: Simplify right side
   12,682.19x = 74,485,003.51
5. Step 5: Solve for x
   x = 74,485,003.51/12,682.19
6. Step 6: Final answer
   x = 5,873.20