Finding the Fourth Proportional to 28,123.01, 42,184.56 and 8,400.02

Step by Step Solution

1. Step 1: Write the proportion equation
   28,123.01 : 42,184.56 = 8,400.02 : x
2. Step 2: Convert to fraction form
   28,123.01/42,184.56 = 8,400.02/x
3. Step 3: Cross multiply
   28,123.01x = 42,184.56 × 8,400.02
4. Step 4: Simplify right side
   28,123.01x = 354,351,147.69
5. Step 5: Solve for x
   x = 354,351,147.69/28,123.01
6. Step 6: Final answer
   x = 12,600.04