Finding the Fourth Proportional to 9,368.28, 12,926.90 and 5,387.94

Step by Step Solution

1. Step 1: Write the proportion equation
   9,368.28 : 12,926.90 = 5,387.94 : x
2. Step 2: Convert to fraction form
   9,368.28/12,926.90 = 5,387.94/x
3. Step 3: Cross multiply
   9,368.28x = 12,926.90 × 5,387.94
4. Step 4: Simplify right side
   9,368.28x = 69,649,361.59
5. Step 5: Solve for x
   x = 69,649,361.59/9,368.28
6. Step 6: Final answer
   x = 7,434.59