Finding the Fourth Proportional to 13,280,158.47, 18,326,655.98 and 7,699,489.49

Step by Step Solution

1. Step 1: Write the proportion equation
   13,280,158.47 : 18,326,655.98 = 7,699,489.49 : x
2. Step 2: Convert to fraction form
   13,280,158.47/18,326,655.98 = 7,699,489.49/x
3. Step 3: Cross multiply
   13,280,158.47x = 18,326,655.98 × 7,699,489.49
4. Step 4: Simplify right side
   13,280,158.47x = 141,105,895,141,047.94
5. Step 5: Solve for x
   x = 141,105,895,141,047.94/13,280,158.47
6. Step 6: Final answer
   x = 10,625,317.12