Finding the Fourth Proportional to 11,870.58, 17,802.28 and 3,971.08

Step by Step Solution

1. Step 1: Write the proportion equation
   11,870.58 : 17,802.28 = 3,971.08 : x
2. Step 2: Convert to fraction form
   11,870.58/17,802.28 = 3,971.08/x
3. Step 3: Cross multiply
   11,870.58x = 17,802.28 × 3,971.08
4. Step 4: Simplify right side
   11,870.58x = 70,694,278.06
5. Step 5: Solve for x
   x = 70,694,278.06/11,870.58
6. Step 6: Final answer
   x = 5,955.42