Finding the Fourth Proportional to 28,707.06, 43,061.40 and 7,930.56

Step by Step Solution

1. Step 1: Write the proportion equation
   28,707.06 : 43,061.40 = 7,930.56 : x
2. Step 2: Convert to fraction form
   28,707.06/43,061.40 = 7,930.56/x
3. Step 3: Cross multiply
   28,707.06x = 43,061.40 × 7,930.56
4. Step 4: Simplify right side
   28,707.06x = 341,501,016.38
5. Step 5: Solve for x
   x = 341,501,016.38/28,707.06
6. Step 6: Final answer
   x = 11,896.06