Finding the Fourth Proportional to 31,412.01, 47,110.72 and 9,219.43

Step by Step Solution

1. Step 1: Write the proportion equation
   31,412.01 : 47,110.72 = 9,219.43 : x
2. Step 2: Convert to fraction form
   31,412.01/47,110.72 = 9,219.43/x
3. Step 3: Cross multiply
   31,412.01x = 47,110.72 × 9,219.43
4. Step 4: Simplify right side
   31,412.01x = 434,333,985.29
5. Step 5: Solve for x
   x = 434,333,985.29/31,412.01
6. Step 6: Final answer
   x = 13,827.00