Finding the Fourth Proportional to 42,411, 63,616.50 and 13,227

Step by Step Solution

1. Step 1: Write the proportion equation
   42,411 : 63,616.50 = 13,227 : x
2. Step 2: Convert to fraction form
   42,411/63,616.50 = 13,227/x
3. Step 3: Cross multiply
   42,411x = 63,616.50 × 13,227
4. Step 4: Simplify right side
   42,411x = 841,455,445.50
5. Step 5: Solve for x
   x = 841,455,445.50/42,411
6. Step 6: Final answer
   x = 19,840.50