Finding the Fourth Proportional to 12,643.13, 18,950.56 and 4,738.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,643.13 : 18,950.56 = 4,738.04 : x
2. Step 2: Convert to fraction form
   12,643.13/18,950.56 = 4,738.04/x
3. Step 3: Cross multiply
   12,643.13x = 18,950.56 × 4,738.04
4. Step 4: Simplify right side
   12,643.13x = 89,788,511.30
5. Step 5: Solve for x
   x = 89,788,511.30/12,643.13
6. Step 6: Final answer
   x = 7,101.76