Finding the Fourth Proportional to 11,802.63, 17,706.55 and 3,907.61

Step by Step Solution

1. Step 1: Write the proportion equation
   11,802.63 : 17,706.55 = 3,907.61 : x
2. Step 2: Convert to fraction form
   11,802.63/17,706.55 = 3,907.61/x
3. Step 3: Cross multiply
   11,802.63x = 17,706.55 × 3,907.61
4. Step 4: Simplify right side
   11,802.63x = 69,190,291.85
5. Step 5: Solve for x
   x = 69,190,291.85/11,802.63
6. Step 6: Final answer
   x = 5,862.28