Finding the Fourth Proportional to 10,903.50, 16,264.71 and 10,539.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,903.50 : 16,264.71 = 10,539.05 : x
2. Step 2: Convert to fraction form
   10,903.50/16,264.71 = 10,539.05/x
3. Step 3: Cross multiply
   10,903.50x = 16,264.71 × 10,539.05
4. Step 4: Simplify right side
   10,903.50x = 171,414,510.60
5. Step 5: Solve for x
   x = 171,414,510.60/10,903.50
6. Step 6: Final answer
   x = 15,721.05