Finding the Fourth Proportional to 30,888, 42,606.56 and 18,304.32

Step by Step Solution

1. Step 1: Write the proportion equation
   30,888 : 42,606.56 = 18,304.32 : x
2. Step 2: Convert to fraction form
   30,888/42,606.56 = 18,304.32/x
3. Step 3: Cross multiply
   30,888x = 42,606.56 × 18,304.32
4. Step 4: Simplify right side
   30,888x = 779,884,108.34
5. Step 5: Solve for x
   x = 779,884,108.34/30,888
6. Step 6: Final answer
   x = 25,248.77