Finding the Fourth Proportional to 11,870.56, 17,808.03 and 3,972.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,870.56 : 17,808.03 = 3,972.31 : x
2. Step 2: Convert to fraction form
   11,870.56/17,808.03 = 3,972.31/x
3. Step 3: Cross multiply
   11,870.56x = 17,808.03 × 3,972.31
4. Step 4: Simplify right side
   11,870.56x = 70,739,015.65
5. Step 5: Solve for x
   x = 70,739,015.65/11,870.56
6. Step 6: Final answer
   x = 5,959.20