Finding the Fourth Proportional to 9,940.98, 13,718.86 and 5,692.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,940.98 : 13,718.86 = 5,692.05 : x
2. Step 2: Convert to fraction form
   9,940.98/13,718.86 = 5,692.05/x
3. Step 3: Cross multiply
   9,940.98x = 13,718.86 × 5,692.05
4. Step 4: Simplify right side
   9,940.98x = 78,088,437.06
5. Step 5: Solve for x
   x = 78,088,437.06/9,940.98
6. Step 6: Final answer
   x = 7,855.21