Finding the Fourth Proportional to 11,869.47, 17,802.18 and 3,971.43

Step by Step Solution

1. Step 1: Write the proportion equation
   11,869.47 : 17,802.18 = 3,971.43 : x
2. Step 2: Convert to fraction form
   11,869.47/17,802.18 = 3,971.43/x
3. Step 3: Cross multiply
   11,869.47x = 17,802.18 × 3,971.43
4. Step 4: Simplify right side
   11,869.47x = 70,700,111.72
5. Step 5: Solve for x
   x = 70,700,111.72/11,869.47
6. Step 6: Final answer
   x = 5,956.47