Finding the Fourth Proportional to 12,898.35, 19,347.59 and 4,578.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,898.35 : 19,347.59 = 4,578.62 : x
2. Step 2: Convert to fraction form
   12,898.35/19,347.59 = 4,578.62/x
3. Step 3: Cross multiply
   12,898.35x = 19,347.59 × 4,578.62
4. Step 4: Simplify right side
   12,898.35x = 88,585,142.89
5. Step 5: Solve for x
   x = 88,585,142.89/12,898.35
6. Step 6: Final answer
   x = 6,867.94