Finding the Fourth Proportional to 9,316.22, 12,856.59 and 5,124.47

Step by Step Solution

1. Step 1: Write the proportion equation
   9,316.22 : 12,856.59 = 5,124.47 : x
2. Step 2: Convert to fraction form
   9,316.22/12,856.59 = 5,124.47/x
3. Step 3: Cross multiply
   9,316.22x = 12,856.59 × 5,124.47
4. Step 4: Simplify right side
   9,316.22x = 65,883,184.13
5. Step 5: Solve for x
   x = 65,883,184.13/9,316.22
6. Step 6: Final answer
   x = 7,071.88