Finding the Fourth Proportional to 9,410.45, 12,987.88 and 5,432.81

Step by Step Solution

1. Step 1: Write the proportion equation
   9,410.45 : 12,987.88 = 5,432.81 : x
2. Step 2: Convert to fraction form
   9,410.45/12,987.88 = 5,432.81/x
3. Step 3: Cross multiply
   9,410.45x = 12,987.88 × 5,432.81
4. Step 4: Simplify right side
   9,410.45x = 70,560,605.82
5. Step 5: Solve for x
   x = 70,560,605.82/9,410.45
6. Step 6: Final answer
   x = 7,498.12