Finding the Fourth Proportional to 10,881.57, 16,320.72 and 3,485.25

Step by Step Solution

1. Step 1: Write the proportion equation
   10,881.57 : 16,320.72 = 3,485.25 : x
2. Step 2: Convert to fraction form
   10,881.57/16,320.72 = 3,485.25/x
3. Step 3: Cross multiply
   10,881.57x = 16,320.72 × 3,485.25
4. Step 4: Simplify right side
   10,881.57x = 56,881,789.38
5. Step 5: Solve for x
   x = 56,881,789.38/10,881.57
6. Step 6: Final answer
   x = 5,227.35