Finding the Fourth Proportional to 10,446.09, 15,659.15 and 3,870.51

Step by Step Solution

1. Step 1: Write the proportion equation
   10,446.09 : 15,659.15 = 3,870.51 : x
2. Step 2: Convert to fraction form
   10,446.09/15,659.15 = 3,870.51/x
3. Step 3: Cross multiply
   10,446.09x = 15,659.15 × 3,870.51
4. Step 4: Simplify right side
   10,446.09x = 60,608,877.31
5. Step 5: Solve for x
   x = 60,608,877.31/10,446.09
6. Step 6: Final answer
   x = 5,802.06