Finding the Fourth Proportional to 10,435.72, 15,653.59 and 5,437.06

Step by Step Solution

1. Step 1: Write the proportion equation
   10,435.72 : 15,653.59 = 5,437.06 : x
2. Step 2: Convert to fraction form
   10,435.72/15,653.59 = 5,437.06/x
3. Step 3: Cross multiply
   10,435.72x = 15,653.59 × 5,437.06
4. Step 4: Simplify right side
   10,435.72x = 85,109,508.05
5. Step 5: Solve for x
   x = 85,109,508.05/10,435.72
6. Step 6: Final answer
   x = 8,155.60