Finding the Fourth Proportional to 10,962.18, 16,430.94 and 5,403.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,962.18 : 16,430.94 = 5,403.76 : x
2. Step 2: Convert to fraction form
   10,962.18/16,430.94 = 5,403.76/x
3. Step 3: Cross multiply
   10,962.18x = 16,430.94 × 5,403.76
4. Step 4: Simplify right side
   10,962.18x = 88,788,856.33
5. Step 5: Solve for x
   x = 88,788,856.33/10,962.18
6. Step 6: Final answer
   x = 8,099.56