Finding the Fourth Proportional to 13,438,311.08, 18,546,443.69 and 7,637,964.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,438,311.08 : 18,546,443.69 = 7,637,964.72 : x
2. Step 2: Convert to fraction form
   13,438,311.08/18,546,443.69 = 7,637,964.72/x
3. Step 3: Cross multiply
   13,438,311.08x = 18,546,443.69 × 7,637,964.72
4. Step 4: Simplify right side
   13,438,311.08x = 141,657,082,520,225.59
5. Step 5: Solve for x
   x = 141,657,082,520,225.59/13,438,311.08
6. Step 6: Final answer
   x = 10,541,286.15