Finding the Fourth Proportional to 10,365.10, 14,189.39 and 10,290.98

Step by Step Solution

1. Step 1: Write the proportion equation
   10,365.10 : 14,189.39 = 10,290.98 : x
2. Step 2: Convert to fraction form
   10,365.10/14,189.39 = 10,290.98/x
3. Step 3: Cross multiply
   10,365.10x = 14,189.39 × 10,290.98
4. Step 4: Simplify right side
   10,365.10x = 146,022,809.20
5. Step 5: Solve for x
   x = 146,022,809.20/10,365.10
6. Step 6: Final answer
   x = 14,087.93