Finding the Fourth Proportional to 22,131.90, 30,541.91 and 12,703.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,131.90 : 30,541.91 = 12,703.50 : x
2. Step 2: Convert to fraction form
   22,131.90/30,541.91 = 12,703.50/x
3. Step 3: Cross multiply
   22,131.90x = 30,541.91 × 12,703.50
4. Step 4: Simplify right side
   22,131.90x = 387,989,090.17
5. Step 5: Solve for x
   x = 387,989,090.17/22,131.90
6. Step 6: Final answer
   x = 17,530.76