Finding the Fourth Proportional to 21,185.39, 31,784.46 and 19,095.59

Step by Step Solution

1. Step 1: Write the proportion equation
   21,185.39 : 31,784.46 = 19,095.59 : x
2. Step 2: Convert to fraction form
   21,185.39/31,784.46 = 19,095.59/x
3. Step 3: Cross multiply
   21,185.39x = 31,784.46 × 19,095.59
4. Step 4: Simplify right side
   21,185.39x = 606,942,762.13
5. Step 5: Solve for x
   x = 606,942,762.13/21,185.39
6. Step 6: Final answer
   x = 28,649.13