Finding the Fourth Proportional to 12,784.58, 19,175.34 and 3,425.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,784.58 : 19,175.34 = 3,425.30 : x
2. Step 2: Convert to fraction form
   12,784.58/19,175.34 = 3,425.30/x
3. Step 3: Cross multiply
   12,784.58x = 19,175.34 × 3,425.30
4. Step 4: Simplify right side
   12,784.58x = 65,681,292.10
5. Step 5: Solve for x
   x = 65,681,292.10/12,784.58
6. Step 6: Final answer
   x = 5,137.54