Finding the Fourth Proportional to 10,404.86, 14,381.96 and 7,776.81

Step by Step Solution

1. Step 1: Write the proportion equation
   10,404.86 : 14,381.96 = 7,776.81 : x
2. Step 2: Convert to fraction form
   10,404.86/14,381.96 = 7,776.81/x
3. Step 3: Cross multiply
   10,404.86x = 14,381.96 × 7,776.81
4. Step 4: Simplify right side
   10,404.86x = 111,845,731.46
5. Step 5: Solve for x
   x = 111,845,731.46/10,404.86
6. Step 6: Final answer
   x = 10,749.38