Finding the Fourth Proportional to 11,758.56, 17,637.72 and 3,972.84

Step by Step Solution

1. Step 1: Write the proportion equation
   11,758.56 : 17,637.72 = 3,972.84 : x
2. Step 2: Convert to fraction form
   11,758.56/17,637.72 = 3,972.84/x
3. Step 3: Cross multiply
   11,758.56x = 17,637.72 × 3,972.84
4. Step 4: Simplify right side
   11,758.56x = 70,071,839.52
5. Step 5: Solve for x
   x = 70,071,839.52/11,758.56
6. Step 6: Final answer
   x = 5,959.22