Finding the Fourth Proportional to 21,802.15, 30,087.03 and 12,370.69

Step by Step Solution

1. Step 1: Write the proportion equation
   21,802.15 : 30,087.03 = 12,370.69 : x
2. Step 2: Convert to fraction form
   21,802.15/30,087.03 = 12,370.69/x
3. Step 3: Cross multiply
   21,802.15x = 30,087.03 × 12,370.69
4. Step 4: Simplify right side
   21,802.15x = 372,197,321.15
5. Step 5: Solve for x
   x = 372,197,321.15/21,802.15
6. Step 6: Final answer
   x = 17,071.59