Finding the Fourth Proportional to 9,902.72, 13,664.94 and 5,425.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,902.72 : 13,664.94 = 5,425.52 : x
2. Step 2: Convert to fraction form
   9,902.72/13,664.94 = 5,425.52/x
3. Step 3: Cross multiply
   9,902.72x = 13,664.94 × 5,425.52
4. Step 4: Simplify right side
   9,902.72x = 74,139,405.27
5. Step 5: Solve for x
   x = 74,139,405.27/9,902.72
6. Step 6: Final answer
   x = 7,486.77