Finding the Fourth Proportional to 9,902.76, 13,665.40 and 5,926.06

Step by Step Solution

1. Step 1: Write the proportion equation
   9,902.76 : 13,665.40 = 5,926.06 : x
2. Step 2: Convert to fraction form
   9,902.76/13,665.40 = 5,926.06/x
3. Step 3: Cross multiply
   9,902.76x = 13,665.40 × 5,926.06
4. Step 4: Simplify right side
   9,902.76x = 80,981,980.32
5. Step 5: Solve for x
   x = 80,981,980.32/9,902.76
6. Step 6: Final answer
   x = 8,177.72