Finding the Fourth Proportional to 39,113, 53,975.89 and 21,207.98

Step by Step Solution

1. Step 1: Write the proportion equation
   39,113 : 53,975.89 = 21,207.98 : x
2. Step 2: Convert to fraction form
   39,113/53,975.89 = 21,207.98/x
3. Step 3: Cross multiply
   39,113x = 53,975.89 × 21,207.98
4. Step 4: Simplify right side
   39,113x = 1,144,719,595.60
5. Step 5: Solve for x
   x = 1,144,719,595.60/39,113
6. Step 6: Final answer
   x = 29,266.99