Finding the Fourth Proportional to 13,320.89, 19,977.27 and 5,527.88

Step by Step Solution

1. Step 1: Write the proportion equation
   13,320.89 : 19,977.27 = 5,527.88 : x
2. Step 2: Convert to fraction form
   13,320.89/19,977.27 = 5,527.88/x
3. Step 3: Cross multiply
   13,320.89x = 19,977.27 × 5,527.88
4. Step 4: Simplify right side
   13,320.89x = 110,431,851.40
5. Step 5: Solve for x
   x = 110,431,851.40/13,320.89
6. Step 6: Final answer
   x = 8,290.13