Finding the Fourth Proportional to 10,905.60, 16,353.54 and 3,112.59

Step by Step Solution

1. Step 1: Write the proportion equation
   10,905.60 : 16,353.54 = 3,112.59 : x
2. Step 2: Convert to fraction form
   10,905.60/16,353.54 = 3,112.59/x
3. Step 3: Cross multiply
   10,905.60x = 16,353.54 × 3,112.59
4. Step 4: Simplify right side
   10,905.60x = 50,901,865.07
5. Step 5: Solve for x
   x = 50,901,865.07/10,905.60
6. Step 6: Final answer
   x = 4,667.50