Finding the Fourth Proportional to 15,784.07, 21,806.82 and 12,020.00

Step by Step Solution

1. Step 1: Write the proportion equation
   15,784.07 : 21,806.82 = 12,020.00 : x
2. Step 2: Convert to fraction form
   15,784.07/21,806.82 = 12,020.00/x
3. Step 3: Cross multiply
   15,784.07x = 21,806.82 × 12,020.00
4. Step 4: Simplify right side
   15,784.07x = 262,117,867.37
5. Step 5: Solve for x
   x = 262,117,867.37/15,784.07
6. Step 6: Final answer
   x = 16,606.49