Finding the Fourth Proportional to 28,058.48, 42,086.35 and 10,526.94

Step by Step Solution

1. Step 1: Write the proportion equation
   28,058.48 : 42,086.35 = 10,526.94 : x
2. Step 2: Convert to fraction form
   28,058.48/42,086.35 = 10,526.94/x
3. Step 3: Cross multiply
   28,058.48x = 42,086.35 × 10,526.94
4. Step 4: Simplify right side
   28,058.48x = 443,040,481.27
5. Step 5: Solve for x
   x = 443,040,481.27/28,058.48
6. Step 6: Final answer
   x = 15,789.90