Finding the Fourth Proportional to 22,112.16, 33,123.82 and 10,985.20

Step by Step Solution

1. Step 1: Write the proportion equation
   22,112.16 : 33,123.82 = 10,985.20 : x
2. Step 2: Convert to fraction form
   22,112.16/33,123.82 = 10,985.20/x
3. Step 3: Cross multiply
   22,112.16x = 33,123.82 × 10,985.20
4. Step 4: Simplify right side
   22,112.16x = 363,871,787.46
5. Step 5: Solve for x
   x = 363,871,787.46/22,112.16
6. Step 6: Final answer
   x = 16,455.73