Finding the Fourth Proportional to 43,386.52, 65,056.74 and 19,993

Step by Step Solution

1. Step 1: Write the proportion equation
   43,386.52 : 65,056.74 = 19,993 : x
2. Step 2: Convert to fraction form
   43,386.52/65,056.74 = 19,993/x
3. Step 3: Cross multiply
   43,386.52x = 65,056.74 × 19,993
4. Step 4: Simplify right side
   43,386.52x = 1,300,679,402.82
5. Step 5: Solve for x
   x = 1,300,679,402.82/43,386.52
6. Step 6: Final answer
   x = 29,978.88