Finding the Fourth Proportional to 31,186.82, 46,748.71 and 13,429.06

Step by Step Solution

1. Step 1: Write the proportion equation
   31,186.82 : 46,748.71 = 13,429.06 : x
2. Step 2: Convert to fraction form
   31,186.82/46,748.71 = 13,429.06/x
3. Step 3: Cross multiply
   31,186.82x = 46,748.71 × 13,429.06
4. Step 4: Simplify right side
   31,186.82x = 627,791,231.51
5. Step 5: Solve for x
   x = 627,791,231.51/31,186.82
6. Step 6: Final answer
   x = 20,130.02