Finding the Fourth Proportional to 9,811.69, 14,726.78 and 3,577.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,811.69 : 14,726.78 = 3,577.72 : x
2. Step 2: Convert to fraction form
   9,811.69/14,726.78 = 3,577.72/x
3. Step 3: Cross multiply
   9,811.69x = 14,726.78 × 3,577.72
4. Step 4: Simplify right side
   9,811.69x = 52,688,295.34
5. Step 5: Solve for x
   x = 52,688,295.34/9,811.69
6. Step 6: Final answer
   x = 5,369.95