Finding the Fourth Proportional to 21,355.29, 29,484.17 and 19,113.27

Step by Step Solution

1. Step 1: Write the proportion equation
   21,355.29 : 29,484.17 = 19,113.27 : x
2. Step 2: Convert to fraction form
   21,355.29/29,484.17 = 19,113.27/x
3. Step 3: Cross multiply
   21,355.29x = 29,484.17 × 19,113.27
4. Step 4: Simplify right side
   21,355.29x = 563,538,806.37
5. Step 5: Solve for x
   x = 563,538,806.37/21,355.29
6. Step 6: Final answer
   x = 26,388.72