Finding the Fourth Proportional to 9,780.94, 13,499.42 and 5,804.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,780.94 : 13,499.42 = 5,804.25 : x
2. Step 2: Convert to fraction form
   9,780.94/13,499.42 = 5,804.25/x
3. Step 3: Cross multiply
   9,780.94x = 13,499.42 × 5,804.25
4. Step 4: Simplify right side
   9,780.94x = 78,354,008.54
5. Step 5: Solve for x
   x = 78,354,008.54/9,780.94
6. Step 6: Final answer
   x = 8,010.89