Finding the Fourth Proportional to 10,870.59, 16,214.51 and 9,873.99

Step by Step Solution

1. Step 1: Write the proportion equation
   10,870.59 : 16,214.51 = 9,873.99 : x
2. Step 2: Convert to fraction form
   10,870.59/16,214.51 = 9,873.99/x
3. Step 3: Cross multiply
   10,870.59x = 16,214.51 × 9,873.99
4. Step 4: Simplify right side
   10,870.59x = 160,101,934.28
5. Step 5: Solve for x
   x = 160,101,934.28/10,870.59
6. Step 6: Final answer
   x = 14,727.99