Finding the Fourth Proportional to 9,354.68, 12,909.05 and 5,105.63

Step by Step Solution

1. Step 1: Write the proportion equation
   9,354.68 : 12,909.05 = 5,105.63 : x
2. Step 2: Convert to fraction form
   9,354.68/12,909.05 = 5,105.63/x
3. Step 3: Cross multiply
   9,354.68x = 12,909.05 × 5,105.63
4. Step 4: Simplify right side
   9,354.68x = 65,908,742.88
5. Step 5: Solve for x
   x = 65,908,742.88/9,354.68
6. Step 6: Final answer
   x = 7,045.54