Finding the Fourth Proportional to 37,866.42, 52,255.80 and 21,099.42

Step by Step Solution

1. Step 1: Write the proportion equation
   37,866.42 : 52,255.80 = 21,099.42 : x
2. Step 2: Convert to fraction form
   37,866.42/52,255.80 = 21,099.42/x
3. Step 3: Cross multiply
   37,866.42x = 52,255.80 × 21,099.42
4. Step 4: Simplify right side
   37,866.42x = 1,102,567,071.64
5. Step 5: Solve for x
   x = 1,102,567,071.64/37,866.42
6. Step 6: Final answer
   x = 29,117.28