Finding the Fourth Proportional to 9,945.72, 14,921.82 and 4,752

Step by Step Solution

1. Step 1: Write the proportion equation
   9,945.72 : 14,921.82 = 4,752 : x
2. Step 2: Convert to fraction form
   9,945.72/14,921.82 = 4,752/x
3. Step 3: Cross multiply
   9,945.72x = 14,921.82 × 4,752
4. Step 4: Simplify right side
   9,945.72x = 70,908,488.64
5. Step 5: Solve for x
   x = 70,908,488.64/9,945.72
6. Step 6: Final answer
   x = 7,129.55