Finding the Fourth Proportional to 12,641.88, 18,948.69 and 4,736.79

Step by Step Solution

1. Step 1: Write the proportion equation
   12,641.88 : 18,948.69 = 4,736.79 : x
2. Step 2: Convert to fraction form
   12,641.88/18,948.69 = 4,736.79/x
3. Step 3: Cross multiply
   12,641.88x = 18,948.69 × 4,736.79
4. Step 4: Simplify right side
   12,641.88x = 89,755,965.31
5. Step 5: Solve for x
   x = 89,755,965.31/12,641.88
6. Step 6: Final answer
   x = 7,099.89