Finding the Fourth Proportional to 28,196.34, 42,305.58 and 11,564.34

Step by Step Solution

1. Step 1: Write the proportion equation
   28,196.34 : 42,305.58 = 11,564.34 : x
2. Step 2: Convert to fraction form
   28,196.34/42,305.58 = 11,564.34/x
3. Step 3: Cross multiply
   28,196.34x = 42,305.58 × 11,564.34
4. Step 4: Simplify right side
   28,196.34x = 489,236,111.02
5. Step 5: Solve for x
   x = 489,236,111.02/28,196.34
6. Step 6: Final answer
   x = 17,351.05