Finding the Fourth Proportional to 10,778.32, 16,167.30 and 5,230.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,778.32 : 16,167.30 = 5,230.72 : x
2. Step 2: Convert to fraction form
   10,778.32/16,167.30 = 5,230.72/x
3. Step 3: Cross multiply
   10,778.32x = 16,167.30 × 5,230.72
4. Step 4: Simplify right side
   10,778.32x = 84,566,619.46
5. Step 5: Solve for x
   x = 84,566,619.46/10,778.32
6. Step 6: Final answer
   x = 7,845.99