Finding the Fourth Proportional to 13,603,978.76, 18,772,629.46 and 7,492,407.24

Step by Step Solution

1. Step 1: Write the proportion equation
   13,603,978.76 : 18,772,629.46 = 7,492,407.24 : x
2. Step 2: Convert to fraction form
   13,603,978.76/18,772,629.46 = 7,492,407.24/x
3. Step 3: Cross multiply
   13,603,978.76x = 18,772,629.46 × 7,492,407.24
4. Step 4: Simplify right side
   13,603,978.76x = 140,652,184,879,941.30
5. Step 5: Solve for x
   x = 140,652,184,879,941.30/13,603,978.76
6. Step 6: Final answer
   x = 10,339,047.67