Finding the Fourth Proportional to 9,954.86, 13,737.72 and 5,478.62

Step by Step Solution

1. Step 1: Write the proportion equation
   9,954.86 : 13,737.72 = 5,478.62 : x
2. Step 2: Convert to fraction form
   9,954.86/13,737.72 = 5,478.62/x
3. Step 3: Cross multiply
   9,954.86x = 13,737.72 × 5,478.62
4. Step 4: Simplify right side
   9,954.86x = 75,263,678.86
5. Step 5: Solve for x
   x = 75,263,678.86/9,954.86
6. Step 6: Final answer
   x = 7,560.49