Finding the Fourth Proportional to 10,499.31, 14,484.89 and 7,311.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,499.31 : 14,484.89 = 7,311.76 : x
2. Step 2: Convert to fraction form
   10,499.31/14,484.89 = 7,311.76/x
3. Step 3: Cross multiply
   10,499.31x = 14,484.89 × 7,311.76
4. Step 4: Simplify right side
   10,499.31x = 105,910,021.37
5. Step 5: Solve for x
   x = 105,910,021.37/10,499.31
6. Step 6: Final answer
   x = 10,087.33