Finding the Fourth Proportional to 10,456.41, 14,448.54 and 7,778.43

Step by Step Solution

1. Step 1: Write the proportion equation
   10,456.41 : 14,448.54 = 7,778.43 : x
2. Step 2: Convert to fraction form
   10,456.41/14,448.54 = 7,778.43/x
3. Step 3: Cross multiply
   10,456.41x = 14,448.54 × 7,778.43
4. Step 4: Simplify right side
   10,456.41x = 112,386,956.99
5. Step 5: Solve for x
   x = 112,386,956.99/10,456.41
6. Step 6: Final answer
   x = 10,748.14