Finding the Fourth Proportional to 22,530.18, 31,091.46 and 12,971.94

Step by Step Solution

1. Step 1: Write the proportion equation
   22,530.18 : 31,091.46 = 12,971.94 : x
2. Step 2: Convert to fraction form
   22,530.18/31,091.46 = 12,971.94/x
3. Step 3: Cross multiply
   22,530.18x = 31,091.46 × 12,971.94
4. Step 4: Simplify right side
   22,530.18x = 403,316,553.63
5. Step 5: Solve for x
   x = 403,316,553.63/22,530.18
6. Step 6: Final answer
   x = 17,901.17