Finding the Fourth Proportional to 37,881.52, 52,276.63 and 20,885.40

Step by Step Solution

1. Step 1: Write the proportion equation
   37,881.52 : 52,276.63 = 20,885.40 : x
2. Step 2: Convert to fraction form
   37,881.52/52,276.63 = 20,885.40/x
3. Step 3: Cross multiply
   37,881.52x = 52,276.63 × 20,885.40
4. Step 4: Simplify right side
   37,881.52x = 1,091,818,066.82
5. Step 5: Solve for x
   x = 1,091,818,066.82/37,881.52
6. Step 6: Final answer
   x = 28,821.92