Finding the Fourth Proportional to 22,276, 30,729.12 and 13,886.56

Step by Step Solution

1. Step 1: Write the proportion equation
   22,276 : 30,729.12 = 13,886.56 : x
2. Step 2: Convert to fraction form
   22,276/30,729.12 = 13,886.56/x
3. Step 3: Cross multiply
   22,276x = 30,729.12 × 13,886.56
4. Step 4: Simplify right side
   22,276x = 426,721,768.63
5. Step 5: Solve for x
   x = 426,721,768.63/22,276
6. Step 6: Final answer
   x = 19,156.12