Finding the Fourth Proportional to 31,685.08, 47,531.94 and 10,903

Step by Step Solution

1. Step 1: Write the proportion equation
   31,685.08 : 47,531.94 = 10,903 : x
2. Step 2: Convert to fraction form
   31,685.08/47,531.94 = 10,903/x
3. Step 3: Cross multiply
   31,685.08x = 47,531.94 × 10,903
4. Step 4: Simplify right side
   31,685.08x = 518,240,741.82
5. Step 5: Solve for x
   x = 518,240,741.82/31,685.08
6. Step 6: Final answer
   x = 16,355.99