Finding the Fourth Proportional to 12,619.72, 18,938.94 and 4,729.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,619.72 : 18,938.94 = 4,729.48 : x
2. Step 2: Convert to fraction form
   12,619.72/18,938.94 = 4,729.48/x
3. Step 3: Cross multiply
   12,619.72x = 18,938.94 × 4,729.48
4. Step 4: Simplify right side
   12,619.72x = 89,571,337.95
5. Step 5: Solve for x
   x = 89,571,337.95/12,619.72
6. Step 6: Final answer
   x = 7,097.73