Finding the Fourth Proportional to 13,290,609.94, 18,341,038.89 and 7,179,038.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,290,609.94 : 18,341,038.89 = 7,179,038.50 : x
2. Step 2: Convert to fraction form
   13,290,609.94/18,341,038.89 = 7,179,038.50/x
3. Step 3: Cross multiply
   13,290,609.94x = 18,341,038.89 × 7,179,038.50
4. Step 4: Simplify right side
   13,290,609.94x = 131,671,024,321,307.27
5. Step 5: Solve for x
   x = 131,671,024,321,307.27/13,290,609.94
6. Step 6: Final answer
   x = 9,907,071.60