Finding the Fourth Proportional to 30,810.32, 42,518.20 and 17,381.56

Step by Step Solution

1. Step 1: Write the proportion equation
   30,810.32 : 42,518.20 = 17,381.56 : x
2. Step 2: Convert to fraction form
   30,810.32/42,518.20 = 17,381.56/x
3. Step 3: Cross multiply
   30,810.32x = 42,518.20 × 17,381.56
4. Step 4: Simplify right side
   30,810.32x = 739,032,644.39
5. Step 5: Solve for x
   x = 739,032,644.39/30,810.32
6. Step 6: Final answer
   x = 23,986.53