Finding the Fourth Proportional to 37,109.40, 51,209.04 and 21,190.72

Step by Step Solution

1. Step 1: Write the proportion equation
   37,109.40 : 51,209.04 = 21,190.72 : x
2. Step 2: Convert to fraction form
   37,109.40/51,209.04 = 21,190.72/x
3. Step 3: Cross multiply
   37,109.40x = 51,209.04 × 21,190.72
4. Step 4: Simplify right side
   37,109.40x = 1,085,156,428.11
5. Step 5: Solve for x
   x = 1,085,156,428.11/37,109.40
6. Step 6: Final answer
   x = 29,242.09