Finding the Fourth Proportional to 9,969.13, 13,756.88 and 5,492.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,969.13 : 13,756.88 = 5,492.78 : x
2. Step 2: Convert to fraction form
   9,969.13/13,756.88 = 5,492.78/x
3. Step 3: Cross multiply
   9,969.13x = 13,756.88 × 5,492.78
4. Step 4: Simplify right side
   9,969.13x = 75,563,460.27
5. Step 5: Solve for x
   x = 75,563,460.27/9,969.13
6. Step 6: Final answer
   x = 7,579.75