Finding the Fourth Proportional to 16,700.42, 25,050.55 and 4,220.47

Step by Step Solution

1. Step 1: Write the proportion equation
   16,700.42 : 25,050.55 = 4,220.47 : x
2. Step 2: Convert to fraction form
   16,700.42/25,050.55 = 4,220.47/x
3. Step 3: Cross multiply
   16,700.42x = 25,050.55 × 4,220.47
4. Step 4: Simplify right side
   16,700.42x = 105,725,094.76
5. Step 5: Solve for x
   x = 105,725,094.76/16,700.42
6. Step 6: Final answer
   x = 6,330.68