Finding the Fourth Proportional to 9,995.99, 14,989.59 and 5,314.86

Step by Step Solution

1. Step 1: Write the proportion equation
   9,995.99 : 14,989.59 = 5,314.86 : x
2. Step 2: Convert to fraction form
   9,995.99/14,989.59 = 5,314.86/x
3. Step 3: Cross multiply
   9,995.99x = 14,989.59 × 5,314.86
4. Step 4: Simplify right side
   9,995.99x = 79,667,572.31
5. Step 5: Solve for x
   x = 79,667,572.31/9,995.99
6. Step 6: Final answer
   x = 7,969.96