Finding the Fourth Proportional to 31,298.68, 46,940.64 and 9,106.12

Step by Step Solution

1. Step 1: Write the proportion equation
   31,298.68 : 46,940.64 = 9,106.12 : x
2. Step 2: Convert to fraction form
   31,298.68/46,940.64 = 9,106.12/x
3. Step 3: Cross multiply
   31,298.68x = 46,940.64 × 9,106.12
4. Step 4: Simplify right side
   31,298.68x = 427,447,100.72
5. Step 5: Solve for x
   x = 427,447,100.72/31,298.68
6. Step 6: Final answer
   x = 13,657.03