Finding the Fourth Proportional to 10,881.84, 16,327.86 and 7,555.20

Step by Step Solution

1. Step 1: Write the proportion equation
   10,881.84 : 16,327.86 = 7,555.20 : x
2. Step 2: Convert to fraction form
   10,881.84/16,327.86 = 7,555.20/x
3. Step 3: Cross multiply
   10,881.84x = 16,327.86 × 7,555.20
4. Step 4: Simplify right side
   10,881.84x = 123,360,247.87
5. Step 5: Solve for x
   x = 123,360,247.87/10,881.84
6. Step 6: Final answer
   x = 11,336.34