Finding the Fourth Proportional to 9,979.10, 14,963.76 and 5,820.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,979.10 : 14,963.76 = 5,820.16 : x
2. Step 2: Convert to fraction form
   9,979.10/14,963.76 = 5,820.16/x
3. Step 3: Cross multiply
   9,979.10x = 14,963.76 × 5,820.16
4. Step 4: Simplify right side
   9,979.10x = 87,091,477.40
5. Step 5: Solve for x
   x = 87,091,477.40/9,979.10
6. Step 6: Final answer
   x = 8,727.39