Finding the Fourth Proportional to 13,577.61, 20,367.82 and 3,716.88

Step by Step Solution

1. Step 1: Write the proportion equation
   13,577.61 : 20,367.82 = 3,716.88 : x
2. Step 2: Convert to fraction form
   13,577.61/20,367.82 = 3,716.88/x
3. Step 3: Cross multiply
   13,577.61x = 20,367.82 × 3,716.88
4. Step 4: Simplify right side
   13,577.61x = 75,704,809.89
5. Step 5: Solve for x
   x = 75,704,809.89/13,577.61
6. Step 6: Final answer
   x = 5,575.71