Finding the Fourth Proportional to 10,789.42, 14,888.38 and 7,958.34

Step by Step Solution

1. Step 1: Write the proportion equation
   10,789.42 : 14,888.38 = 7,958.34 : x
2. Step 2: Convert to fraction form
   10,789.42/14,888.38 = 7,958.34/x
3. Step 3: Cross multiply
   10,789.42x = 14,888.38 × 7,958.34
4. Step 4: Simplify right side
   10,789.42x = 118,486,790.09
5. Step 5: Solve for x
   x = 118,486,790.09/10,789.42
6. Step 6: Final answer
   x = 10,981.76