Finding the Fourth Proportional to 6,128.88, 9,179.91 and 4,738.56

Step by Step Solution

1. Step 1: Write the proportion equation
   6,128.88 : 9,179.91 = 4,738.56 : x
2. Step 2: Convert to fraction form
   6,128.88/9,179.91 = 4,738.56/x
3. Step 3: Cross multiply
   6,128.88x = 9,179.91 × 4,738.56
4. Step 4: Simplify right side
   6,128.88x = 43,499,554.33
5. Step 5: Solve for x
   x = 43,499,554.33/6,128.88
6. Step 6: Final answer
   x = 7,097.47