Finding the Fourth Proportional to 13,200.05, 19,801.89 and 10,086

Step by Step Solution

1. Step 1: Write the proportion equation
   13,200.05 : 19,801.89 = 10,086 : x
2. Step 2: Convert to fraction form
   13,200.05/19,801.89 = 10,086/x
3. Step 3: Cross multiply
   13,200.05x = 19,801.89 × 10,086
4. Step 4: Simplify right side
   13,200.05x = 199,721,862.54
5. Step 5: Solve for x
   x = 199,721,862.54/13,200.05
6. Step 6: Final answer
   x = 15,130.39