Finding the Fourth Proportional to 13,085.33, 19,621.91 and 5,685.98

Step by Step Solution

1. Step 1: Write the proportion equation
   13,085.33 : 19,621.91 = 5,685.98 : x
2. Step 2: Convert to fraction form
   13,085.33/19,621.91 = 5,685.98/x
3. Step 3: Cross multiply
   13,085.33x = 19,621.91 × 5,685.98
4. Step 4: Simplify right side
   13,085.33x = 111,569,703.93
5. Step 5: Solve for x
   x = 111,569,703.93/13,085.33
6. Step 6: Final answer
   x = 8,526.32