Finding the Fourth Proportional to 9,971.99, 14,960.38 and 2,856.33

Step by Step Solution

1. Step 1: Write the proportion equation
   9,971.99 : 14,960.38 = 2,856.33 : x
2. Step 2: Convert to fraction form
   9,971.99/14,960.38 = 2,856.33/x
3. Step 3: Cross multiply
   9,971.99x = 14,960.38 × 2,856.33
4. Step 4: Simplify right side
   9,971.99x = 42,731,843.53
5. Step 5: Solve for x
   x = 42,731,843.53/9,971.99
6. Step 6: Final answer
   x = 4,285.19