Finding the Fourth Proportional to 11,665.68, 17,505.30 and 4,910.76

Step by Step Solution

1. Step 1: Write the proportion equation
   11,665.68 : 17,505.30 = 4,910.76 : x
2. Step 2: Convert to fraction form
   11,665.68/17,505.30 = 4,910.76/x
3. Step 3: Cross multiply
   11,665.68x = 17,505.30 × 4,910.76
4. Step 4: Simplify right side
   11,665.68x = 85,964,327.03
5. Step 5: Solve for x
   x = 85,964,327.03/11,665.68
6. Step 6: Final answer
   x = 7,368.99