Finding the Fourth Proportional to 9,410.87, 12,987.18 and 5,432.19

Step by Step Solution

1. Step 1: Write the proportion equation
   9,410.87 : 12,987.18 = 5,432.19 : x
2. Step 2: Convert to fraction form
   9,410.87/12,987.18 = 5,432.19/x
3. Step 3: Cross multiply
   9,410.87x = 12,987.18 × 5,432.19
4. Step 4: Simplify right side
   9,410.87x = 70,548,829.32
5. Step 5: Solve for x
   x = 70,548,829.32/9,410.87
6. Step 6: Final answer
   x = 7,496.53