Finding the Fourth Proportional to 9,421.31, 14,118.76 and 7,079.81

Step by Step Solution

1. Step 1: Write the proportion equation
   9,421.31 : 14,118.76 = 7,079.81 : x
2. Step 2: Convert to fraction form
   9,421.31/14,118.76 = 7,079.81/x
3. Step 3: Cross multiply
   9,421.31x = 14,118.76 × 7,079.81
4. Step 4: Simplify right side
   9,421.31x = 99,958,155.83
5. Step 5: Solve for x
   x = 99,958,155.83/9,421.31
6. Step 6: Final answer
   x = 10,609.80