Finding the Fourth Proportional to 34,123.16, 51,172.50 and 13,069.12

Step by Step Solution

1. Step 1: Write the proportion equation
   34,123.16 : 51,172.50 = 13,069.12 : x
2. Step 2: Convert to fraction form
   34,123.16/51,172.50 = 13,069.12/x
3. Step 3: Cross multiply
   34,123.16x = 51,172.50 × 13,069.12
4. Step 4: Simplify right side
   34,123.16x = 668,779,543.20
5. Step 5: Solve for x
   x = 668,779,543.20/34,123.16
6. Step 6: Final answer
   x = 19,598.99