Finding the Fourth Proportional to 9,114.72, 13,670.64 and 2,958.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,114.72 : 13,670.64 = 2,958.72 : x
2. Step 2: Convert to fraction form
   9,114.72/13,670.64 = 2,958.72/x
3. Step 3: Cross multiply
   9,114.72x = 13,670.64 × 2,958.72
4. Step 4: Simplify right side
   9,114.72x = 40,447,595.98
5. Step 5: Solve for x
   x = 40,447,595.98/9,114.72
6. Step 6: Final answer
   x = 4,437.61