Finding the Fourth Proportional to 9,638.32, 13,299.72 and 5,445.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,638.32 : 13,299.72 = 5,445.76 : x
2. Step 2: Convert to fraction form
   9,638.32/13,299.72 = 5,445.76/x
3. Step 3: Cross multiply
   9,638.32x = 13,299.72 × 5,445.76
4. Step 4: Simplify right side
   9,638.32x = 72,427,083.19
5. Step 5: Solve for x
   x = 72,427,083.19/9,638.32
6. Step 6: Final answer
   x = 7,514.49