Finding the Fourth Proportional to 10,980.56, 16,473.48 and 5,134.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,980.56 : 16,473.48 = 5,134.40 : x
2. Step 2: Convert to fraction form
   10,980.56/16,473.48 = 5,134.40/x
3. Step 3: Cross multiply
   10,980.56x = 16,473.48 × 5,134.40
4. Step 4: Simplify right side
   10,980.56x = 84,581,435.71
5. Step 5: Solve for x
   x = 84,581,435.71/10,980.56
6. Step 6: Final answer
   x = 7,702.83