Finding the Fourth Proportional to 7,180.88, 10,780.68 and 5,538.56

Step by Step Solution

1. Step 1: Write the proportion equation
   7,180.88 : 10,780.68 = 5,538.56 : x
2. Step 2: Convert to fraction form
   7,180.88/10,780.68 = 5,538.56/x
3. Step 3: Cross multiply
   7,180.88x = 10,780.68 × 5,538.56
4. Step 4: Simplify right side
   7,180.88x = 59,709,443.02
5. Step 5: Solve for x
   x = 59,709,443.02/7,180.88
6. Step 6: Final answer
   x = 8,315.06