Finding the Fourth Proportional to 10,997.80, 16,492.86 and 5,157.16

Step by Step Solution

1. Step 1: Write the proportion equation
   10,997.80 : 16,492.86 = 5,157.16 : x
2. Step 2: Convert to fraction form
   10,997.80/16,492.86 = 5,157.16/x
3. Step 3: Cross multiply
   10,997.80x = 16,492.86 × 5,157.16
4. Step 4: Simplify right side
   10,997.80x = 85,056,317.88
5. Step 5: Solve for x
   x = 85,056,317.88/10,997.80
6. Step 6: Final answer
   x = 7,733.94