Finding the Fourth Proportional to 10,099.38, 13,926.54 and 7,971.39

Step by Step Solution

1. Step 1: Write the proportion equation
   10,099.38 : 13,926.54 = 7,971.39 : x
2. Step 2: Convert to fraction form
   10,099.38/13,926.54 = 7,971.39/x
3. Step 3: Cross multiply
   10,099.38x = 13,926.54 × 7,971.39
4. Step 4: Simplify right side
   10,099.38x = 111,013,881.69
5. Step 5: Solve for x
   x = 111,013,881.69/10,099.38
6. Step 6: Final answer
   x = 10,992.15