Finding the Fourth Proportional to 10,830.88, 14,903.22 and 8,311.96

Step by Step Solution

1. Step 1: Write the proportion equation
   10,830.88 : 14,903.22 = 8,311.96 : x
2. Step 2: Convert to fraction form
   10,830.88/14,903.22 = 8,311.96/x
3. Step 3: Cross multiply
   10,830.88x = 14,903.22 × 8,311.96
4. Step 4: Simplify right side
   10,830.88x = 123,874,968.51
5. Step 5: Solve for x
   x = 123,874,968.51/10,830.88
6. Step 6: Final answer
   x = 11,437.20