Finding the Fourth Proportional to 9,954.03, 13,736.96 and 5,478.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,954.03 : 13,736.96 = 5,478.12 : x
2. Step 2: Convert to fraction form
   9,954.03/13,736.96 = 5,478.12/x
3. Step 3: Cross multiply
   9,954.03x = 13,736.96 × 5,478.12
4. Step 4: Simplify right side
   9,954.03x = 75,252,715.32
5. Step 5: Solve for x
   x = 75,252,715.32/9,954.03
6. Step 6: Final answer
   x = 7,560.02