Finding the Fourth Proportional to 12,648.70, 18,970.33 and 3,761.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,648.70 : 18,970.33 = 3,761.89 : x
2. Step 2: Convert to fraction form
   12,648.70/18,970.33 = 3,761.89/x
3. Step 3: Cross multiply
   12,648.70x = 18,970.33 × 3,761.89
4. Step 4: Simplify right side
   12,648.70x = 71,364,181.06
5. Step 5: Solve for x
   x = 71,364,181.06/12,648.70
6. Step 6: Final answer
   x = 5,642.02