Finding the Fourth Proportional to 13,280,061.31, 18,326,522.57 and 7,699,392.36

Step by Step Solution

1. Step 1: Write the proportion equation
   13,280,061.31 : 18,326,522.57 = 7,699,392.36 : x
2. Step 2: Convert to fraction form
   13,280,061.31/18,326,522.57 = 7,699,392.36/x
3. Step 3: Cross multiply
   13,280,061.31x = 18,326,522.57 × 7,699,392.36
4. Step 4: Simplify right side
   13,280,061.31x = 141,103,087,822,328.62
5. Step 5: Solve for x
   x = 141,103,087,822,328.62/13,280,061.31
6. Step 6: Final answer
   x = 10,625,183.47