Finding the Fourth Proportional to 13,845.20, 19,106.37 and 7,557.57

Step by Step Solution

1. Step 1: Write the proportion equation
   13,845.20 : 19,106.37 = 7,557.57 : x
2. Step 2: Convert to fraction form
   13,845.20/19,106.37 = 7,557.57/x
3. Step 3: Cross multiply
   13,845.20x = 19,106.37 × 7,557.57
4. Step 4: Simplify right side
   13,845.20x = 144,397,690.93
5. Step 5: Solve for x
   x = 144,397,690.93/13,845.20
6. Step 6: Final answer
   x = 10,429.44