Finding the Fourth Proportional to 11,868.53, 17,804.94 and 3,970.30

Step by Step Solution

1. Step 1: Write the proportion equation
   11,868.53 : 17,804.94 = 3,970.30 : x
2. Step 2: Convert to fraction form
   11,868.53/17,804.94 = 3,970.30/x
3. Step 3: Cross multiply
   11,868.53x = 17,804.94 × 3,970.30
4. Step 4: Simplify right side
   11,868.53x = 70,690,953.28
5. Step 5: Solve for x
   x = 70,690,953.28/11,868.53
6. Step 6: Final answer
   x = 5,956.17