Finding the Fourth Proportional to 10,009.56, 13,830.30 and 7,929.48

Step by Step Solution

1. Step 1: Write the proportion equation
   10,009.56 : 13,830.30 = 7,929.48 : x
2. Step 2: Convert to fraction form
   10,009.56/13,830.30 = 7,929.48/x
3. Step 3: Cross multiply
   10,009.56x = 13,830.30 × 7,929.48
4. Step 4: Simplify right side
   10,009.56x = 109,667,087.24
5. Step 5: Solve for x
   x = 109,667,087.24/10,009.56
6. Step 6: Final answer
   x = 10,956.23