Finding the Fourth Proportional to 10,985.57, 16,484.51 and 5,437.43

Step by Step Solution

1. Step 1: Write the proportion equation
   10,985.57 : 16,484.51 = 5,437.43 : x
2. Step 2: Convert to fraction form
   10,985.57/16,484.51 = 5,437.43/x
3. Step 3: Cross multiply
   10,985.57x = 16,484.51 × 5,437.43
4. Step 4: Simplify right side
   10,985.57x = 89,633,362.20
5. Step 5: Solve for x
   x = 89,633,362.20/10,985.57
6. Step 6: Final answer
   x = 8,159.19