Finding the Fourth Proportional to 11,881.86, 16,392.80 and 7,401.96

Step by Step Solution

1. Step 1: Write the proportion equation
   11,881.86 : 16,392.80 = 7,401.96 : x
2. Step 2: Convert to fraction form
   11,881.86/16,392.80 = 7,401.96/x
3. Step 3: Cross multiply
   11,881.86x = 16,392.80 × 7,401.96
4. Step 4: Simplify right side
   11,881.86x = 121,338,849.89
5. Step 5: Solve for x
   x = 121,338,849.89/11,881.86
6. Step 6: Final answer
   x = 10,212.11