Finding the Fourth Proportional to 9,930.32, 14,887.28 and 7,748.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,930.32 : 14,887.28 = 7,748.72 : x
2. Step 2: Convert to fraction form
   9,930.32/14,887.28 = 7,748.72/x
3. Step 3: Cross multiply
   9,930.32x = 14,887.28 × 7,748.72
4. Step 4: Simplify right side
   9,930.32x = 115,357,364.28
5. Step 5: Solve for x
   x = 115,357,364.28/9,930.32
6. Step 6: Final answer
   x = 11,616.68