Finding the Fourth Proportional to 30,802.55, 42,507.54 and 16,655.40

Step by Step Solution

1. Step 1: Write the proportion equation
   30,802.55 : 42,507.54 = 16,655.40 : x
2. Step 2: Convert to fraction form
   30,802.55/42,507.54 = 16,655.40/x
3. Step 3: Cross multiply
   30,802.55x = 42,507.54 × 16,655.40
4. Step 4: Simplify right side
   30,802.55x = 707,980,081.72
5. Step 5: Solve for x
   x = 707,980,081.72/30,802.55
6. Step 6: Final answer
   x = 22,984.47