Finding the Fourth Proportional to 11,807.40, 17,706.58 and 3,907.53

Step by Step Solution

1. Step 1: Write the proportion equation
   11,807.40 : 17,706.58 = 3,907.53 : x
2. Step 2: Convert to fraction form
   11,807.40/17,706.58 = 3,907.53/x
3. Step 3: Cross multiply
   11,807.40x = 17,706.58 × 3,907.53
4. Step 4: Simplify right side
   11,807.40x = 69,188,992.55
5. Step 5: Solve for x
   x = 69,188,992.55/11,807.40
6. Step 6: Final answer
   x = 5,859.80