Finding the Fourth Proportional to 9,131.19, 13,691.51 and 3,578.04

Step by Step Solution

1. Step 1: Write the proportion equation
   9,131.19 : 13,691.51 = 3,578.04 : x
2. Step 2: Convert to fraction form
   9,131.19/13,691.51 = 3,578.04/x
3. Step 3: Cross multiply
   9,131.19x = 13,691.51 × 3,578.04
4. Step 4: Simplify right side
   9,131.19x = 48,988,752.55
5. Step 5: Solve for x
   x = 48,988,752.55/9,131.19
6. Step 6: Final answer
   x = 5,364.99