Finding the Fourth Proportional to 9,347.68, 12,899.81 and 5,369.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,347.68 : 12,899.81 = 5,369.05 : x
2. Step 2: Convert to fraction form
   9,347.68/12,899.81 = 5,369.05/x
3. Step 3: Cross multiply
   9,347.68x = 12,899.81 × 5,369.05
4. Step 4: Simplify right side
   9,347.68x = 69,259,698.04
5. Step 5: Solve for x
   x = 69,259,698.04/9,347.68
6. Step 6: Final answer
   x = 7,409.29