Finding the Fourth Proportional to 28,023.01, 42,034.37 and 8,300.05

Step by Step Solution

1. Step 1: Write the proportion equation
   28,023.01 : 42,034.37 = 8,300.05 : x
2. Step 2: Convert to fraction form
   28,023.01/42,034.37 = 8,300.05/x
3. Step 3: Cross multiply
   28,023.01x = 42,034.37 × 8,300.05
4. Step 4: Simplify right side
   28,023.01x = 348,887,372.72
5. Step 5: Solve for x
   x = 348,887,372.72/28,023.01
6. Step 6: Final answer
   x = 12,450.03