Finding the Fourth Proportional to 10,852.99, 14,978.82 and 7,867.73

Step by Step Solution

1. Step 1: Write the proportion equation
   10,852.99 : 14,978.82 = 7,867.73 : x
2. Step 2: Convert to fraction form
   10,852.99/14,978.82 = 7,867.73/x
3. Step 3: Cross multiply
   10,852.99x = 14,978.82 × 7,867.73
4. Step 4: Simplify right side
   10,852.99x = 117,849,378.43
5. Step 5: Solve for x
   x = 117,849,378.43/10,852.99
6. Step 6: Final answer
   x = 10,858.70