Finding the Fourth Proportional to 22,109.10, 31,030.50 and 22,109.10

Step by Step Solution

1. Step 1: Write the proportion equation
   22,109.10 : 31,030.50 = 22,109.10 : x
2. Step 2: Convert to fraction form
   22,109.10/31,030.50 = 22,109.10/x
3. Step 3: Cross multiply
   22,109.10x = 31,030.50 × 22,109.10
4. Step 4: Simplify right side
   22,109.10x = 686,056,427.55
5. Step 5: Solve for x
   x = 686,056,427.55/22,109.10
6. Step 6: Final answer
   x = 31,030.50