Finding the Fourth Proportional to 10,638.08, 15,946.56 and 5,432.32

Step by Step Solution

1. Step 1: Write the proportion equation
   10,638.08 : 15,946.56 = 5,432.32 : x
2. Step 2: Convert to fraction form
   10,638.08/15,946.56 = 5,432.32/x
3. Step 3: Cross multiply
   10,638.08x = 15,946.56 × 5,432.32
4. Step 4: Simplify right side
   10,638.08x = 86,626,816.82
5. Step 5: Solve for x
   x = 86,626,816.82/10,638.08
6. Step 6: Final answer
   x = 8,143.09