Finding the Fourth Proportional to 31,366.42, 47,030.54 and 13,333.40

Step by Step Solution

1. Step 1: Write the proportion equation
   31,366.42 : 47,030.54 = 13,333.40 : x
2. Step 2: Convert to fraction form
   31,366.42/47,030.54 = 13,333.40/x
3. Step 3: Cross multiply
   31,366.42x = 47,030.54 × 13,333.40
4. Step 4: Simplify right side
   31,366.42x = 627,077,002.04
5. Step 5: Solve for x
   x = 627,077,002.04/31,366.42
6. Step 6: Final answer
   x = 19,991.99