Finding the Fourth Proportional to 34,715.50, 52,075.68 and 13,939

Step by Step Solution

1. Step 1: Write the proportion equation
   34,715.50 : 52,075.68 = 13,939 : x
2. Step 2: Convert to fraction form
   34,715.50/52,075.68 = 13,939/x
3. Step 3: Cross multiply
   34,715.50x = 52,075.68 × 13,939
4. Step 4: Simplify right side
   34,715.50x = 725,882,903.52
5. Step 5: Solve for x
   x = 725,882,903.52/34,715.50
6. Step 6: Final answer
   x = 20,909.48