Finding the Fourth Proportional to 13,278.16, 18,323.86 and 7,309.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,278.16 : 18,323.86 = 7,309.82 : x
2. Step 2: Convert to fraction form
   13,278.16/18,323.86 = 7,309.82/x
3. Step 3: Cross multiply
   13,278.16x = 18,323.86 × 7,309.82
4. Step 4: Simplify right side
   13,278.16x = 133,944,118.31
5. Step 5: Solve for x
   x = 133,944,118.31/13,278.16
6. Step 6: Final answer
   x = 10,087.55