Finding the Fourth Proportional to 22,443.32, 30,991.71 and 13,959.98

Step by Step Solution

1. Step 1: Write the proportion equation
   22,443.32 : 30,991.71 = 13,959.98 : x
2. Step 2: Convert to fraction form
   22,443.32/30,991.71 = 13,959.98/x
3. Step 3: Cross multiply
   22,443.32x = 30,991.71 × 13,959.98
4. Step 4: Simplify right side
   22,443.32x = 432,643,496.81
5. Step 5: Solve for x
   x = 432,643,496.81/22,443.32
6. Step 6: Final answer
   x = 19,277.17