Finding the Fourth Proportional to 12,302.74, 16,978.71 and 6,998.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,302.74 : 16,978.71 = 6,998.05 : x
2. Step 2: Convert to fraction form
   12,302.74/16,978.71 = 6,998.05/x
3. Step 3: Cross multiply
   12,302.74x = 16,978.71 × 6,998.05
4. Step 4: Simplify right side
   12,302.74x = 118,817,861.52
5. Step 5: Solve for x
   x = 118,817,861.52/12,302.74
6. Step 6: Final answer
   x = 9,657.84