Finding the Fourth Proportional to 21,223.91, 31,835.83 and 5,641.53

Step by Step Solution

1. Step 1: Write the proportion equation
   21,223.91 : 31,835.83 = 5,641.53 : x
2. Step 2: Convert to fraction form
   21,223.91/31,835.83 = 5,641.53/x
3. Step 3: Cross multiply
   21,223.91x = 31,835.83 × 5,641.53
4. Step 4: Simplify right side
   21,223.91x = 179,602,830.32
5. Step 5: Solve for x
   x = 179,602,830.32/21,223.91
6. Step 6: Final answer
   x = 8,462.29