Finding the Fourth Proportional to 12,985,919.37, 17,921,096.24 and 7,184,606.63

Step by Step Solution

1. Step 1: Write the proportion equation
   12,985,919.37 : 17,921,096.24 = 7,184,606.63 : x
2. Step 2: Convert to fraction form
   12,985,919.37/17,921,096.24 = 7,184,606.63/x
3. Step 3: Cross multiply
   12,985,919.37x = 17,921,096.24 × 7,184,606.63
4. Step 4: Simplify right side
   12,985,919.37x = 128,756,026,737,243.55
5. Step 5: Solve for x
   x = 128,756,026,737,243.55/12,985,919.37
6. Step 6: Final answer
   x = 9,915,048.99