Finding the Fourth Proportional to 12,535.89, 18,804.78 and 4,215.93

Step by Step Solution

1. Step 1: Write the proportion equation
   12,535.89 : 18,804.78 = 4,215.93 : x
2. Step 2: Convert to fraction form
   12,535.89/18,804.78 = 4,215.93/x
3. Step 3: Cross multiply
   12,535.89x = 18,804.78 × 4,215.93
4. Step 4: Simplify right side
   12,535.89x = 79,279,636.15
5. Step 5: Solve for x
   x = 79,279,636.15/12,535.89
6. Step 6: Final answer
   x = 6,324.21