Finding the Fourth Proportional to 13,772.90, 19,006.61 and 7,485.27

Step by Step Solution

1. Step 1: Write the proportion equation
   13,772.90 : 19,006.61 = 7,485.27 : x
2. Step 2: Convert to fraction form
   13,772.90/19,006.61 = 7,485.27/x
3. Step 3: Cross multiply
   13,772.90x = 19,006.61 × 7,485.27
4. Step 4: Simplify right side
   13,772.90x = 142,269,570.21
5. Step 5: Solve for x
   x = 142,269,570.21/13,772.90
6. Step 6: Final answer
   x = 10,329.68