Finding the Fourth Proportional to 10,847.56, 16,280.70 and 5,305

Step by Step Solution

1. Step 1: Write the proportion equation
   10,847.56 : 16,280.70 = 5,305 : x
2. Step 2: Convert to fraction form
   10,847.56/16,280.70 = 5,305/x
3. Step 3: Cross multiply
   10,847.56x = 16,280.70 × 5,305
4. Step 4: Simplify right side
   10,847.56x = 86,369,113.50
5. Step 5: Solve for x
   x = 86,369,113.50/10,847.56
6. Step 6: Final answer
   x = 7,962.08