Finding the Fourth Proportional to 10,748.19, 16,128.54 and 4,507.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,748.19 : 16,128.54 = 4,507.72 : x
2. Step 2: Convert to fraction form
   10,748.19/16,128.54 = 4,507.72/x
3. Step 3: Cross multiply
   10,748.19x = 16,128.54 × 4,507.72
4. Step 4: Simplify right side
   10,748.19x = 72,702,942.33
5. Step 5: Solve for x
   x = 72,702,942.33/10,748.19
6. Step 6: Final answer
   x = 6,764.20