Finding the Fourth Proportional to 9,412.44, 12,987.45 and 5,432.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,412.44 : 12,987.45 = 5,432.10 : x
2. Step 2: Convert to fraction form
   9,412.44/12,987.45 = 5,432.10/x
3. Step 3: Cross multiply
   9,412.44x = 12,987.45 × 5,432.10
4. Step 4: Simplify right side
   9,412.44x = 70,549,127.15
5. Step 5: Solve for x
   x = 70,549,127.15/9,412.44
6. Step 6: Final answer
   x = 7,495.31