Finding the Fourth Proportional to 13,291,050, 18,341,658.72 and 7,179,478.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,291,050 : 18,341,658.72 = 7,179,478.50 : x
2. Step 2: Convert to fraction form
   13,291,050/18,341,658.72 = 7,179,478.50/x
3. Step 3: Cross multiply
   13,291,050x = 18,341,658.72 × 7,179,478.50
4. Step 4: Simplify right side
   13,291,050x = 131,683,544,434,577.52
5. Step 5: Solve for x
   x = 131,683,544,434,577.52/13,291,050
6. Step 6: Final answer
   x = 9,907,685.58