Finding the Fourth Proportional to 12,248.86, 16,900.47 and 7,771

Step by Step Solution

1. Step 1: Write the proportion equation
   12,248.86 : 16,900.47 = 7,771 : x
2. Step 2: Convert to fraction form
   12,248.86/16,900.47 = 7,771/x
3. Step 3: Cross multiply
   12,248.86x = 16,900.47 × 7,771
4. Step 4: Simplify right side
   12,248.86x = 131,333,552.37
5. Step 5: Solve for x
   x = 131,333,552.37/12,248.86
6. Step 6: Final answer
   x = 10,722.10