Finding the Fourth Proportional to 12,779.28, 17,634.15 and 7,473.06

Step by Step Solution

1. Step 1: Write the proportion equation
   12,779.28 : 17,634.15 = 7,473.06 : x
2. Step 2: Convert to fraction form
   12,779.28/17,634.15 = 7,473.06/x
3. Step 3: Cross multiply
   12,779.28x = 17,634.15 × 7,473.06
4. Step 4: Simplify right side
   12,779.28x = 131,781,061.00
5. Step 5: Solve for x
   x = 131,781,061.00/12,779.28
6. Step 6: Final answer
   x = 10,312.09