Finding the Fourth Proportional to 21,927.51, 30,259.15 and 12,494.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,927.51 : 30,259.15 = 12,494.25 : x
2. Step 2: Convert to fraction form
   21,927.51/30,259.15 = 12,494.25/x
3. Step 3: Cross multiply
   21,927.51x = 30,259.15 × 12,494.25
4. Step 4: Simplify right side
   21,927.51x = 378,065,384.89
5. Step 5: Solve for x
   x = 378,065,384.89/21,927.51
6. Step 6: Final answer
   x = 17,241.60