Finding the Fourth Proportional to 30,774, 42,468.12 and 19,602.48

Step by Step Solution

1. Step 1: Write the proportion equation
   30,774 : 42,468.12 = 19,602.48 : x
2. Step 2: Convert to fraction form
   30,774/42,468.12 = 19,602.48/x
3. Step 3: Cross multiply
   30,774x = 42,468.12 × 19,602.48
4. Step 4: Simplify right side
   30,774x = 832,480,472.94
5. Step 5: Solve for x
   x = 832,480,472.94/30,774
6. Step 6: Final answer
   x = 27,051.42