Finding the Fourth Proportional to 15,443.56, 21,312.06 and 8,370.10

Step by Step Solution

1. Step 1: Write the proportion equation
   15,443.56 : 21,312.06 = 8,370.10 : x
2. Step 2: Convert to fraction form
   15,443.56/21,312.06 = 8,370.10/x
3. Step 3: Cross multiply
   15,443.56x = 21,312.06 × 8,370.10
4. Step 4: Simplify right side
   15,443.56x = 178,384,073.41
5. Step 5: Solve for x
   x = 178,384,073.41/15,443.56
6. Step 6: Final answer
   x = 11,550.71