Finding the Fourth Proportional to 15,443.16, 21,303.70 and 9,768.34

Step by Step Solution

1. Step 1: Write the proportion equation
   15,443.16 : 21,303.70 = 9,768.34 : x
2. Step 2: Convert to fraction form
   15,443.16/21,303.70 = 9,768.34/x
3. Step 3: Cross multiply
   15,443.16x = 21,303.70 × 9,768.34
4. Step 4: Simplify right side
   15,443.16x = 208,101,784.86
5. Step 5: Solve for x
   x = 208,101,784.86/15,443.16
6. Step 6: Final answer
   x = 13,475.34