Finding the Fourth Proportional to 12,826,158.90, 17,700,385.67 and 7,319,424.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,826,158.90 : 17,700,385.67 = 7,319,424.12 : x
2. Step 2: Convert to fraction form
   12,826,158.90/17,700,385.67 = 7,319,424.12/x
3. Step 3: Cross multiply
   12,826,158.90x = 17,700,385.67 × 7,319,424.12
4. Step 4: Simplify right side
   12,826,158.90x = 129,556,629,806,300.38
5. Step 5: Solve for x
   x = 129,556,629,806,300.38/12,826,158.90
6. Step 6: Final answer
   x = 10,100,968.72