Finding the Fourth Proportional to 10,430.37, 14,290.83 and 10,284.57

Step by Step Solution

1. Step 1: Write the proportion equation
   10,430.37 : 14,290.83 = 10,284.57 : x
2. Step 2: Convert to fraction form
   10,430.37/14,290.83 = 10,284.57/x
3. Step 3: Cross multiply
   10,430.37x = 14,290.83 × 10,284.57
4. Step 4: Simplify right side
   10,430.37x = 146,975,041.49
5. Step 5: Solve for x
   x = 146,975,041.49/10,430.37
6. Step 6: Final answer
   x = 14,091.07