Finding the Fourth Proportional to 9,358.55, 12,914.60 and 5,109.70

Step by Step Solution

1. Step 1: Write the proportion equation
   9,358.55 : 12,914.60 = 5,109.70 : x
2. Step 2: Convert to fraction form
   9,358.55/12,914.60 = 5,109.70/x
3. Step 3: Cross multiply
   9,358.55x = 12,914.60 × 5,109.70
4. Step 4: Simplify right side
   9,358.55x = 65,989,667.05
5. Step 5: Solve for x
   x = 65,989,667.05/9,358.55
6. Step 6: Final answer
   x = 7,051.27