Finding the Fourth Proportional to 9,976.64, 13,768.88 and 7,488.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,976.64 : 13,768.88 = 7,488.32 : x
2. Step 2: Convert to fraction form
   9,976.64/13,768.88 = 7,488.32/x
3. Step 3: Cross multiply
   9,976.64x = 13,768.88 × 7,488.32
4. Step 4: Simplify right side
   9,976.64x = 103,105,779.48
5. Step 5: Solve for x
   x = 103,105,779.48/9,976.64
6. Step 6: Final answer
   x = 10,334.72