Finding the Fourth Proportional to 9,189.61, 13,773.47 and 5,285.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,189.61 : 13,773.47 = 5,285.82 : x
2. Step 2: Convert to fraction form
   9,189.61/13,773.47 = 5,285.82/x
3. Step 3: Cross multiply
   9,189.61x = 13,773.47 × 5,285.82
4. Step 4: Simplify right side
   9,189.61x = 72,804,083.20
5. Step 5: Solve for x
   x = 72,804,083.20/9,189.61
6. Step 6: Final answer
   x = 7,922.43