Finding the Fourth Proportional to 13,130,647.83, 18,117,102.72 and 7,697,090.07

Step by Step Solution

1. Step 1: Write the proportion equation
   13,130,647.83 : 18,117,102.72 = 7,697,090.07 : x
2. Step 2: Convert to fraction form
   13,130,647.83/18,117,102.72 = 7,697,090.07/x
3. Step 3: Cross multiply
   13,130,647.83x = 18,117,102.72 × 7,697,090.07
4. Step 4: Simplify right side
   13,130,647.83x = 139,448,971,443,281.98
5. Step 5: Solve for x
   x = 139,448,971,443,281.98/13,130,647.83
6. Step 6: Final answer
   x = 10,620,113.59