Finding the Fourth Proportional to 21,180.96, 31,770.89 and 5,598.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,180.96 : 31,770.89 = 5,598.72 : x
2. Step 2: Convert to fraction form
   21,180.96/31,770.89 = 5,598.72/x
3. Step 3: Cross multiply
   21,180.96x = 31,770.89 × 5,598.72
4. Step 4: Simplify right side
   21,180.96x = 177,876,317.26
5. Step 5: Solve for x
   x = 177,876,317.26/21,180.96
6. Step 6: Final answer
   x = 8,397.93