Finding the Fourth Proportional to 10,666.62, 16,001.55 and 3,739.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,666.62 : 16,001.55 = 3,739.50 : x
2. Step 2: Convert to fraction form
   10,666.62/16,001.55 = 3,739.50/x
3. Step 3: Cross multiply
   10,666.62x = 16,001.55 × 3,739.50
4. Step 4: Simplify right side
   10,666.62x = 59,837,796.23
5. Step 5: Solve for x
   x = 59,837,796.23/10,666.62
6. Step 6: Final answer
   x = 5,609.82