Finding the Fourth Proportional to 13,150.03, 19,728.02 and 4,385.29

Step by Step Solution

1. Step 1: Write the proportion equation
   13,150.03 : 19,728.02 = 4,385.29 : x
2. Step 2: Convert to fraction form
   13,150.03/19,728.02 = 4,385.29/x
3. Step 3: Cross multiply
   13,150.03x = 19,728.02 × 4,385.29
4. Step 4: Simplify right side
   13,150.03x = 86,513,088.83
5. Step 5: Solve for x
   x = 86,513,088.83/13,150.03
6. Step 6: Final answer
   x = 6,578.93