Finding the Fourth Proportional to 12,768.64, 19,147.72 and 4,874.03

Step by Step Solution

1. Step 1: Write the proportion equation
   12,768.64 : 19,147.72 = 4,874.03 : x
2. Step 2: Convert to fraction form
   12,768.64/19,147.72 = 4,874.03/x
3. Step 3: Cross multiply
   12,768.64x = 19,147.72 × 4,874.03
4. Step 4: Simplify right side
   12,768.64x = 93,326,561.71
5. Step 5: Solve for x
   x = 93,326,561.71/12,768.64
6. Step 6: Final answer
   x = 7,309.04