Finding the Fourth Proportional to 9,902.69, 13,665.96 and 5,926.07

Step by Step Solution

1. Step 1: Write the proportion equation
   9,902.69 : 13,665.96 = 5,926.07 : x
2. Step 2: Convert to fraction form
   9,902.69/13,665.96 = 5,926.07/x
3. Step 3: Cross multiply
   9,902.69x = 13,665.96 × 5,926.07
4. Step 4: Simplify right side
   9,902.69x = 80,985,367.25
5. Step 5: Solve for x
   x = 80,985,367.25/9,902.69
6. Step 6: Final answer
   x = 8,178.12