Finding the Fourth Proportional to 10,602.16, 15,901.71 and 3,580.90

Step by Step Solution

1. Step 1: Write the proportion equation
   10,602.16 : 15,901.71 = 3,580.90 : x
2. Step 2: Convert to fraction form
   10,602.16/15,901.71 = 3,580.90/x
3. Step 3: Cross multiply
   10,602.16x = 15,901.71 × 3,580.90
4. Step 4: Simplify right side
   10,602.16x = 56,942,433.34
5. Step 5: Solve for x
   x = 56,942,433.34/10,602.16
6. Step 6: Final answer
   x = 5,370.83