Finding the Fourth Proportional to 21,752.28, 30,018.96 and 12,061.98

Step by Step Solution

1. Step 1: Write the proportion equation
   21,752.28 : 30,018.96 = 12,061.98 : x
2. Step 2: Convert to fraction form
   21,752.28/30,018.96 = 12,061.98/x
3. Step 3: Cross multiply
   21,752.28x = 30,018.96 × 12,061.98
4. Step 4: Simplify right side
   21,752.28x = 362,088,095.14
5. Step 5: Solve for x
   x = 362,088,095.14/21,752.28
6. Step 6: Final answer
   x = 16,645.98