Finding the Fourth Proportional to 13,113,986.06, 18,097,300.77 and 7,681,478.06

Step by Step Solution

1. Step 1: Write the proportion equation
   13,113,986.06 : 18,097,300.77 = 7,681,478.06 : x
2. Step 2: Convert to fraction form
   13,113,986.06/18,097,300.77 = 7,681,478.06/x
3. Step 3: Cross multiply
   13,113,986.06x = 18,097,300.77 × 7,681,478.06
4. Step 4: Simplify right side
   13,113,986.06x = 139,014,018,826,413.81
5. Step 5: Solve for x
   x = 139,014,018,826,413.81/13,113,986.06
6. Step 6: Final answer
   x = 10,600,439.73