Finding the Fourth Proportional to 9,142.79, 13,715.89 and 2,901.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,142.79 : 13,715.89 = 2,901.12 : x
2. Step 2: Convert to fraction form
   9,142.79/13,715.89 = 2,901.12/x
3. Step 3: Cross multiply
   9,142.79x = 13,715.89 × 2,901.12
4. Step 4: Simplify right side
   9,142.79x = 39,791,477.58
5. Step 5: Solve for x
   x = 39,791,477.58/9,142.79
6. Step 6: Final answer
   x = 4,352.22