Finding the Fourth Proportional to 30,645.06, 42,300.90 and 18,069

Step by Step Solution

1. Step 1: Write the proportion equation
   30,645.06 : 42,300.90 = 18,069 : x
2. Step 2: Convert to fraction form
   30,645.06/42,300.90 = 18,069/x
3. Step 3: Cross multiply
   30,645.06x = 42,300.90 × 18,069
4. Step 4: Simplify right side
   30,645.06x = 764,334,962.10
5. Step 5: Solve for x
   x = 764,334,962.10/30,645.06
6. Step 6: Final answer
   x = 24,941.54