Finding the Fourth Proportional to 10,963.30, 16,434.15 and 5,412.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,963.30 : 16,434.15 = 5,412.10 : x
2. Step 2: Convert to fraction form
   10,963.30/16,434.15 = 5,412.10/x
3. Step 3: Cross multiply
   10,963.30x = 16,434.15 × 5,412.10
4. Step 4: Simplify right side
   10,963.30x = 88,943,263.22
5. Step 5: Solve for x
   x = 88,943,263.22/10,963.30
6. Step 6: Final answer
   x = 8,112.82