Finding the Fourth Proportional to 37,776.16, 52,132.86 and 21,857.53

Step by Step Solution

1. Step 1: Write the proportion equation
   37,776.16 : 52,132.86 = 21,857.53 : x
2. Step 2: Convert to fraction form
   37,776.16/52,132.86 = 21,857.53/x
3. Step 3: Cross multiply
   37,776.16x = 52,132.86 × 21,857.53
4. Step 4: Simplify right side
   37,776.16x = 1,139,495,421.10
5. Step 5: Solve for x
   x = 1,139,495,421.10/37,776.16
6. Step 6: Final answer
   x = 30,164.41