Finding the Fourth Proportional to 4,738.87, 7,109.90 and 2,981.80

Step by Step Solution

1. Step 1: Write the proportion equation
   4,738.87 : 7,109.90 = 2,981.80 : x
2. Step 2: Convert to fraction form
   4,738.87/7,109.90 = 2,981.80/x
3. Step 3: Cross multiply
   4,738.87x = 7,109.90 × 2,981.80
4. Step 4: Simplify right side
   4,738.87x = 21,200,307.27
5. Step 5: Solve for x
   x = 21,200,307.27/4,738.87
6. Step 6: Final answer
   x = 4,473.71