Finding the Fourth Proportional to 12,893.63, 19,342.89 and 3,659.63

Step by Step Solution

1. Step 1: Write the proportion equation
   12,893.63 : 19,342.89 = 3,659.63 : x
2. Step 2: Convert to fraction form
   12,893.63/19,342.89 = 3,659.63/x
3. Step 3: Cross multiply
   12,893.63x = 19,342.89 × 3,659.63
4. Step 4: Simplify right side
   12,893.63x = 70,787,723.82
5. Step 5: Solve for x
   x = 70,787,723.82/12,893.63
6. Step 6: Final answer
   x = 5,490.13