Finding the Fourth Proportional to 30,763.55, 42,445.86 and 18,822.53

Step by Step Solution

1. Step 1: Write the proportion equation
   30,763.55 : 42,445.86 = 18,822.53 : x
2. Step 2: Convert to fraction form
   30,763.55/42,445.86 = 18,822.53/x
3. Step 3: Cross multiply
   30,763.55x = 42,445.86 × 18,822.53
4. Step 4: Simplify right side
   30,763.55x = 798,938,261.00
5. Step 5: Solve for x
   x = 798,938,261.00/30,763.55
6. Step 6: Final answer
   x = 25,970.29