Finding the Fourth Proportional to 10,947.84, 16,317.76 and 10,587.84

Step by Step Solution

1. Step 1: Write the proportion equation
   10,947.84 : 16,317.76 = 10,587.84 : x
2. Step 2: Convert to fraction form
   10,947.84/16,317.76 = 10,587.84/x
3. Step 3: Cross multiply
   10,947.84x = 16,317.76 × 10,587.84
4. Step 4: Simplify right side
   10,947.84x = 172,769,832.04
5. Step 5: Solve for x
   x = 172,769,832.04/10,947.84
6. Step 6: Final answer
   x = 15,781.18