Finding the Fourth Proportional to 10,415.30, 14,362.61 and 7,869.32

Step by Step Solution

1. Step 1: Write the proportion equation
   10,415.30 : 14,362.61 = 7,869.32 : x
2. Step 2: Convert to fraction form
   10,415.30/14,362.61 = 7,869.32/x
3. Step 3: Cross multiply
   10,415.30x = 14,362.61 × 7,869.32
4. Step 4: Simplify right side
   10,415.30x = 113,023,916.83
5. Step 5: Solve for x
   x = 113,023,916.83/10,415.30
6. Step 6: Final answer
   x = 10,851.72