Finding the Fourth Proportional to 10,402.16, 15,604.78 and 3,379.88

Step by Step Solution

1. Step 1: Write the proportion equation
   10,402.16 : 15,604.78 = 3,379.88 : x
2. Step 2: Convert to fraction form
   10,402.16/15,604.78 = 3,379.88/x
3. Step 3: Cross multiply
   10,402.16x = 15,604.78 × 3,379.88
4. Step 4: Simplify right side
   10,402.16x = 52,742,283.83
5. Step 5: Solve for x
   x = 52,742,283.83/10,402.16
6. Step 6: Final answer
   x = 5,070.32