Finding the Fourth Proportional to 11,870.97, 17,800.94 and 4,372.63

Step by Step Solution

1. Step 1: Write the proportion equation
   11,870.97 : 17,800.94 = 4,372.63 : x
2. Step 2: Convert to fraction form
   11,870.97/17,800.94 = 4,372.63/x
3. Step 3: Cross multiply
   11,870.97x = 17,800.94 × 4,372.63
4. Step 4: Simplify right side
   11,870.97x = 77,836,978.53
5. Step 5: Solve for x
   x = 77,836,978.53/11,870.97
6. Step 6: Final answer
   x = 6,556.92