Finding the Fourth Proportional to 30,480.96, 42,060.96 and 19,302.72

Step by Step Solution

1. Step 1: Write the proportion equation
   30,480.96 : 42,060.96 = 19,302.72 : x
2. Step 2: Convert to fraction form
   30,480.96/42,060.96 = 19,302.72/x
3. Step 3: Cross multiply
   30,480.96x = 42,060.96 × 19,302.72
4. Step 4: Simplify right side
   30,480.96x = 811,890,933.81
5. Step 5: Solve for x
   x = 811,890,933.81/30,480.96
6. Step 6: Final answer
   x = 26,636.00