Finding the Fourth Proportional to 37,897.50, 52,298.55 and 21,130.50

Step by Step Solution

1. Step 1: Write the proportion equation
   37,897.50 : 52,298.55 = 21,130.50 : x
2. Step 2: Convert to fraction form
   37,897.50/52,298.55 = 21,130.50/x
3. Step 3: Cross multiply
   37,897.50x = 52,298.55 × 21,130.50
4. Step 4: Simplify right side
   37,897.50x = 1,105,094,510.78
5. Step 5: Solve for x
   x = 1,105,094,510.78/37,897.50
6. Step 6: Final answer
   x = 29,160.09