Finding the Fourth Proportional to 34,978.56, 52,469.76 and 10,356.48

Step by Step Solution

1. Step 1: Write the proportion equation
   34,978.56 : 52,469.76 = 10,356.48 : x
2. Step 2: Convert to fraction form
   34,978.56/52,469.76 = 10,356.48/x
3. Step 3: Cross multiply
   34,978.56x = 52,469.76 × 10,356.48
4. Step 4: Simplify right side
   34,978.56x = 543,402,020.04
5. Step 5: Solve for x
   x = 543,402,020.04/34,978.56
6. Step 6: Final answer
   x = 15,535.29