Finding the Fourth Proportional to 9,326.38, 12,870.81 and 5,347.87

Step by Step Solution

1. Step 1: Write the proportion equation
   9,326.38 : 12,870.81 = 5,347.87 : x
2. Step 2: Convert to fraction form
   9,326.38/12,870.81 = 5,347.87/x
3. Step 3: Cross multiply
   9,326.38x = 12,870.81 × 5,347.87
4. Step 4: Simplify right side
   9,326.38x = 68,831,418.67
5. Step 5: Solve for x
   x = 68,831,418.67/9,326.38
6. Step 6: Final answer
   x = 7,380.29