Finding the Fourth Proportional to 11,762.10, 17,642.78 and 3,970.26

Step by Step Solution

1. Step 1: Write the proportion equation
   11,762.10 : 17,642.78 = 3,970.26 : x
2. Step 2: Convert to fraction form
   11,762.10/17,642.78 = 3,970.26/x
3. Step 3: Cross multiply
   11,762.10x = 17,642.78 × 3,970.26
4. Step 4: Simplify right side
   11,762.10x = 70,046,423.72
5. Step 5: Solve for x
   x = 70,046,423.72/11,762.10
6. Step 6: Final answer
   x = 5,955.27