Finding the Fourth Proportional to 9,131.95, 13,692.63 and 3,578.79

Step by Step Solution

1. Step 1: Write the proportion equation
   9,131.95 : 13,692.63 = 3,578.79 : x
2. Step 2: Convert to fraction form
   9,131.95/13,692.63 = 3,578.79/x
3. Step 3: Cross multiply
   9,131.95x = 13,692.63 × 3,578.79
4. Step 4: Simplify right side
   9,131.95x = 49,003,047.32
5. Step 5: Solve for x
   x = 49,003,047.32/9,131.95
6. Step 6: Final answer
   x = 5,366.11