Finding the Fourth Proportional to 14,101.51, 19,460.02 and 7,728.10

Step by Step Solution

1. Step 1: Write the proportion equation
   14,101.51 : 19,460.02 = 7,728.10 : x
2. Step 2: Convert to fraction form
   14,101.51/19,460.02 = 7,728.10/x
3. Step 3: Cross multiply
   14,101.51x = 19,460.02 × 7,728.10
4. Step 4: Simplify right side
   14,101.51x = 150,388,980.56
5. Step 5: Solve for x
   x = 150,388,980.56/14,101.51
6. Step 6: Final answer
   x = 10,664.74