Finding the Fourth Proportional to 30,567.06, 42,181.02 and 17,991

Step by Step Solution

1. Step 1: Write the proportion equation
   30,567.06 : 42,181.02 = 17,991 : x
2. Step 2: Convert to fraction form
   30,567.06/42,181.02 = 17,991/x
3. Step 3: Cross multiply
   30,567.06x = 42,181.02 × 17,991
4. Step 4: Simplify right side
   30,567.06x = 758,878,730.82
5. Step 5: Solve for x
   x = 758,878,730.82/30,567.06
6. Step 6: Final answer
   x = 24,826.68